a vessel rigged with two masts.
Origin of two-master
1895–1900; two mast(s) + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for two-master
Historical Examples of two-master
She lay flat on her side, a two-master, her sails flapping and floating on the waves.
The lookout would come in to the station and say, Theres a two-master going to pieces on the bar.Four Afloat
Ralph Henry Barbour