MAST n.
The vertical post of a derrick or crane. Afore the mast, Before the mast. See under Afore, and Before. -- Mast coat. See under Coat. -- Mast hoop, one of a number of hoops attached to the fore edge of a boom sail, which slip on the mast as the sail is raised or lowered; also, one of the iron hoops used in making a ma…