trunk (redirected from pulmonary trunk)

trunk

A communications channel between two points. It generally refers to a high-bandwidth, fiber-optic line between telephone switching centers (central offices). Telephone "trunks" handle thousands of simultaneous voice and data signals, whereas telephone "lines" are the wires from the telephone company to your home or office. See central office.

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trunk

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