(rail transport) A main railway line which usually forms the backbone of a rail network. / The main line of a canal, from which other sections diverge.

Used other than figuratively or idiomatically: see elephant, trunk. / (astronomy) An extended pillar-like mass of interstellar gas and dust found near a massive star.

plural of trunk sleeve

(historical) A sleeve, in clothing, with the upper part puffed.

(now historical) Synonym of trunkhose

(plural only) Short-leg boxer briefs

plural of trunk-maker

A person who builds large hinged boxes (trunks). / (theater, obsolete) A critic who pounds upon the benches in a show of approval.

plural of trunk road

(UK) An important main road used by long-distance traffic, as well as heavy lorries.