canal
/kəˈnæl/noun
1
- an artificial waterway constructed to allow the passage of boats or ships inland or to convey water for irrigation运河, 灌溉水渠。
2
- a tubular duct in a plant or animal, serving to convey or contain food, liquid, or air（植物或动物体内用来传送或容纳食物、液体或空气的）管, 道：
the ear canal.
耳道。
3
- Astronomy any of a number of linear markings formerly reported as seen by telescope on the planet Mars【天文】火星运河。
- [ORIGIN: named canali （'channels'） by G. V. Schiaparelli; the markings are now thought to have arisen from eye or lens defects.]
词源
late Middle English: from Old French, alteration of chanel 'channel', from Latin canalis 'pipe, groove, channel', from canna 'cane'.