General English

  • noun the thick stem of a tree
  • noun a large box for storing or sending clothes

General Science

  • noun the long muscular tube at the front of the head of an elephant, used for grasping things and taking up water


  • noun the main woody stem of a tree


  • noun a bus or communication link consisting of wires or leads which connect different parts of a hardware system


  • The main wood shaft of a tree.
  • The shaft portion of a column.
  • Descriptive of the main body of a system, as a sewer trunk line.
  • transmission channel that runs between two central office or switching devices, connecting exchanges to the main telephone network.


  • A physical link, such as a wire, cable, or bus, over which information or power in transferred between two points.
  • A communications path between two central offices or switching systems. Also called trunk circuit (1).
  • A communications path between a central office and a PBX or the premises of a customer. Also called trunk circuit (2).
  • A path via which data travels within a computer.
  • A path utilized to interconnect two power generating stations or power distribution networks. Also called trunk main, or trunk feeder.


  • noun the backside. By analogy with the trunk (UK: boot) of a car. The term has been popular since 2000, sometimes in the phrase ‘junk in the trunk’, i.e. a ‘packed’ or very prominent posterior.
  • noun the penis. By analogy with either the trunk of a tree or an elephant’s trunk.
  • verb to have sex (with), penetrate. Derived from the noun form, the usage was recorded in 2004.


  • noun a large case for carrying luggage, especially by sea or rail

Origin & History of “trunk”

Trunk came via Old French tronc from Latin truncus (source also of English trench and truncate). this denoted ‘something with its protruding parts torn off’, hence ‘something regarded separately from its protruding parts’ – the stem of a tree without its branches, or a body without its limbs. The application of the English word to an ‘elephant’s proboscis’, which dates from the 16th century, apparently arose from some confusion with trump ‘trumpet’.