trunking

noun

1. (countable, uncountable)All the electrical and communications cables bundled together and distributed through a building.
2. (countable, uncountable)The movement of containers or packages between a terminal and a transporter's inland facilities, or the scheduled transportation service between locations.

   “But long-distance trunking, of course, is the cream of the road haulier's job as well as the railway's; hence the anguish.”

3. (UK, countable, uncountable)A system of ducts for cables, heating or ventilation.
4. (UK, countable, uncountable)Plastic conduit or duct used to conceal and protect electrical wiring.
5. (countable, uncountable)A two-way radio technique that uses a control channel to automatically assign frequency channels to groups of user radios.

verb

1. (form-of, gerund, participle, present)present participle and gerund of trunk