资料来源 : pyDict

帆船附载的大艇

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Longboat \Long"boat`\, n. (Naut.)
   Formerly, the largest boat carried by a merchant vessel,
   corresponding to the launch of a naval vessel.

资料来源 : WordNet®

longboat
     n : the largest boat carried by a merchant sailing vessel