main-truck (English, noun)
expansion: main-truck (plural main-trucks)
Senses:
topics: nautical
transport
glosses: On a wooden mast, a circular disc (or sometimes a rectangle) of wood near or at the top of the mast, usually with holes or sheaves to reeve signal halyards; also a temporary or emergency place for a lookout.
Forms:
form: main-trucks
tags: plural