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1. the main stem of a tree, usually thick and upright, covered with bark and having branches at some distance from the ground
2. Anatomy the body excluding the head, neck, and limbs; torso
3. the elongated prehensile nasal part of an elephant; proboscis
4. US and Canadian an enclosed compartment of a car for holding luggage, etc., usually at the rear
5. Anatomy the main stem of a nerve, blood vessel, etc.
6. Nautical a watertight boxlike cover within a vessel with its top above the waterline, such as one used to enclose a centreboard
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the highly developed stem of ligneous plants, which is substantially thicker and taller than lateral branches. In trees with monopodial branching the trunk is the main axis that develops from the growing point of the sprout. In trees with sympodial branching the trunk is formed from successive secondary axes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

What does it mean when you dream about a trunk?

The trunk of a tree may represent one’s inner sense of well-being and personality. A thick bark over a large, hefty trunk denotes a strong, rugged, and durable person. A thin, narrow, bark-free tree trunk suggests a highly sensitive but wiry individual. If the trunk is the long nose of an elephant, the dreamer may have a strong “nose for the news” and a very good memory. Alternatively an elephant’s trunk may have a phallic and sexual meaning. Finally, a trunk in the sense of an old-fashioned storage case may reveal the old memories and secrets to which the dreamer is clinging.

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.


The main mass of the human body, exclusive of the head, neck, and extremities; it is divided into thorax, abdomen, and pelvis.
The main stem of a tree.
A path over which information is transferred in a computer.
A telephone line connecting two central offices. Also known as trunk circuit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


A shared communications channel between two points. Coined by the telephone industry, a trunk typically refers to a high-bandwidth, fiber-optic line between switching centers (central offices). Telephone trunks handle thousands of simultaneous voice and data signals, whereas telephone "lines" are the wires from the central office to the customer.

The term migrated to the information networking industry and may refer to a high-speed or medium-speed channel for data packets.

SIP Trunks
With the advent of voice over IP (VoIP), a SIP trunk is assigned by a SIP provider to a customer, and a single trunk supports one or more telephone numbers (see SIP trunking). See central office.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Narrowing of the median arcuate ligament compresses the celiac trunk and induces a series of symptoms.
Anatomical variations of the celiac trunk: cadaveric and radiological study.
Relevant imaging features, including celiac trunk obstruction (presence or absence) or stenosis (defined as diameter [less than or equal to]4 mm) (13), the degree of celiac trunk stenosis (the ratio of the diameter of the post-stenotic dilated celiac trunk to the diameter of the most narrowed celiac trunk by MAL), presence (defined as diffuse engorged vascular structure compared with adjacent normal vascular diameter) and location of collateral circulation, presence, location, size (largest diameter), and number of splanchnic artery aneurysms, and findings of aneurysm rupture (defined as contrast extravasation or abdominal hematoma associated with aneurysm) were reviewed.
Normal Values of Mesenteric Arterial Blood Flow Doppler Celiac Trunk SMA IMA Para- meters PSV 90-190 80-200 90-140 EDV 30-65 -- 0-10 RI -- 0.8-0.85 >0.9 PI 1.5 [+ or -] 0.02 2.6-4.8 >3.5 D 0.78 [+ or -] 0.08 0.8 [+ or -] 0.07 0.4 [+ or -] 0.03 BF -- 380-640 80-130 PSV: Peak systolic velocity (cm/s); EDV: End diastolic velocity (cm/s); RI: Resistive index; PI: Pulsatility index; D: Diameter (cm); BF: Arterial blood flow (mL/min) Table 2.
De Martino RR and coworkers consider that the anomalies of the splenic artery can be part of the celiac trunk anomalies.
Endothelial dysfunction is evidenced by a significant increase in the levels of endothelin-1 and decrease in the levels of NO metabolites and parameters of regional blood flow in celiac trunk, which reduces esophageal tissue resistance and results in the lower esophageal sphincter dysfunction.
Retrograde flow to the common hepatic branch, all the way to the celiac trunk, was demonstrated through the pancreaticoduodenal arcade.
Chevalier et al., "Aneurysm of the pancreaticoduodenal arteries with a celiac trunk lesion: current management," Journal of Vascular Surgery, vol.
Moreover, 41 cases underwent traditional surgery, 11 cases were at the initial segment of the splenic artery, 6 were giant aneurysms, 5 were aneurysms adjacent to splenic portal, 5 were combined with wide and irregular aneurysm neck, 5 were abnormally combined with celiac trunk and superior mesenteric artery, 4 were multiple aneurysms, and 5 were general aneurysms in the middle and distal segment of splenic porta.
Exact cause of MALS is not known although studies suggest that compression of celiac axis may lead to irritation, fibrosis and enlargement of the nearby celiac ganglia, which is responsible for the symptoms.15 Significant number of asymptomatic individuals can be due to the fact that celiac ganglia occur away from the celiac trunk in 32% of patients and thus remain unaffected from the effects of compression of celiac axis.20 We suggest studies to follow the asymptomatic individuals with anomalous insertion of MAL till the development of symptoms and their relationship with the celiac ganglia.
Visceralvisceral collateral pathways that exist between celiac trunk and its divisions, SMA, IMA, and superior rectal artery are due to their common origin.
Typically the ventral anastomosis and the 11th and 12th vitelline arteries regress, while the 10th and 13th roots give origin to the celiac trunk and the SMA, respectively.