A bodily passage or tube lined with epithelial cells and conveying a secretion or other substance:
— The tear duct was obstructed.

synonyms: canal, channel, epithelial duct.

Roget 350: conduit, channel, duct, watercourse, race; head race, tail race; abito^†, aboideau^†, aboiteau [Fr.], bito^†; acequia^†, acequiador^†, acequiamadre^†; arroyo; adit^†, aqueduct, canal, trough, gutter, pantile; flume, ingate^†, runner; lock-weir, tedge^†; vena^†; dike, main, gully, moat, ditch, drain, sewer, culvert, cloaca, sough, kennel, siphon; piscina^†; pipe etc. (tube) 260; funnel; tunnel etc. (passage) 627; water pipe, waste pipe; emunctory^†, gully hole, artery, aorta, pore, spout, scupper; adjutage^†, ajutage^†; hose; gargoyle; gurgoyle^†; penstock, weir; flood gate, water gate; sluice, lock, valve; rose; waterworks.    pipeline.    ... show more

Dutch: kanaal, buisje, buis, streng
Polish: cewka, przewód, kanał

A continuous tube formed by a row of elongated cells lacking intervening end walls.

Dutch: pijpleiding, pijp

An enclosed conduit for a fluid.

Dutch: pijp, slang