The main structural member of a tree.

(telephony, dated, chiefly Britain) a long-distance telephone call, especially one connected by the operator

plural of trunk call

(Cockney rhyming slang) drunk

(anatomy) A bundle of nerve fibres, held together by a sheath of connective tissue, that makes up the main stem of a nerve

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

plural of trunk road

(idiomatic, slang) Corpulence of the buttocks.

In a single-acting engine, an elongated hollow piston, open at the end, in which the end of the connecting rod is pivoted. The piston rod, crosshead and stuffing box are thus dispensed with.

plural of trunk show