[top-mast, -mahst; Nautical top-muh st]

noun Nautical.

the mast next above a lower mast, usually formed as a separate spar from the lower mast and used to support the yards or rigging of a topsail or topsails.

Origin of topmast

First recorded in 1475–85; top1 + mast1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for topmast

Historical Examples of topmast

British Dictionary definitions for topmast



the mast next above a lower mast on a sailing vessel
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012