1[countable]the thick main stem of a tree, that the branches grow from2(British English, North American English) (British Englishboot)[countable]the space at the back of a car that you put bags, cases, etc. in3[countable]the long nose of an elephant4trunks[plural] = swimming trunks5[countable]a large strong box with a lid used for storing or transporting clothes, books, etc.6[countable, usually singular]the main part of the human body apart from the head, arms and legs see also torso