a building's air/heating/ventilation 'ducts'
the bile 'duct'
tear 'ducts'
(..) -Sorry? -Put your hand down. Holster the bloody weapon, Carter. I need him alive. Weeping blood comes merely from a derangement of the tear duct... ...my dear general. Nothing sinister. All in. I have two pair, and you have a . percent chance... (..)2006 Casino Royale