two-master

two-mast·er

(to͞o′măs′tər)
n.
A sailing vessel having two masts.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

two-mast•er

(ˈtuˈmæs tər, -ˈmɑ stər)

n.
a vessel rigged with two masts.
[1895–1900]
two′-mast′ed, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.