A three-masted vessel, especially such a schooner.(noun)
The Century Dictionary (Public Domain)
Use "three-master" in a sentence
"The other vessels were two-masted schooners, but she was a three-master and the largest in the fleet."
"Shran worked his way down from the "current" name-bearer, the starship on which he was a guest, to the space shuttle, to the aircraft carrier, and finally to the three-master."
"In the year 1795 a three-master, the ‘Juno,’ was precisely in the same half-sunk, water-logged condition as ourselves; and yet with her passengers and crew clinging to her top-masts she drifted for twenty days, until she came in sight of land, when those who had survived the deprivation and fatigue were saved."