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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



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.

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 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.


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.
References in periodicals archive ?
Intraoperative picture showing the brachiocephalic trunk and the main pedicle of the ectopic thyroid tissue arising from it
Erdogan (2012) suggested that the intercostal artery is the branch of the brachiocephalic trunk in the Eurasian bittern.
Furthermore, the right brachiocephalic trunk being larger than the left brachiocephalic trunk was also in support of the conclusion that the flamingo is a unicarotid species with a permanent right carotid artery.
Vertebral level of origin of left common carotid artery, left subclavian artery, and brachiocephalic trunk were measured and the findings were as shown in Table 3.
The study on the vertebral levels of origin of left common carotid artery, left subclavian artery, and brachiocephalic trunk was not found in literature, but these levels are important for vascular interventions.
The brachiocephalic trunks and aorta can be seen pulsating with the heartbeats.
At this site, all the major and cranial arteries, such as the brachiocephalic trunks, the ascending aorta, the brachial arteries, the carotid arteries, the pulmonary arteries, and the jugular veins, can easily be identified (Figs 10 through 12).
5] The right vertebral artery can arise from the first part of the right subclavian artery (1% cases), directly from the arch of aorta (3%), from right common carotid artery or from brachiocephalic trunk.
The anomalous origins reported where vertebral artery of aortic arch between the left common carotid (LCC) and left subclavian (LSA), after left subclavian (LSA) artery, from the thyrocervical trunk, from the brachiocephalic trunk (BCT), from the common carotid artery, from the external carotid artery.
When first, it is in the position of the brachiocephalic trunk and when last it arises from arch's left end, ascending obliquely to the right behind the trachea, oesophagus and right common carotid to the first rib.
Normally right subclavian artery arises from brachiocephalic trunk and passes towards the arm.
Microscopically, severe atherosclerotic lesions were found in the ascending aorta, descending aorta, brachiocephalic trunks (Fig 2A), pulmonary arteries, carotid arteries, brachial arteries, coronary arteries (Fig 2B), mesenteric arteries (Fig 2C), and femoral arteries (Fig 2D).