What does "proa" mean?

Proa: A sailing canoe of the Ladrone Islands and Malay Archipelago, having its lee side flat and its weather side like that of an ordinary boat. The ends are alike. The canoe is long and narrow, and is kept from overturning by a cigar-shaped log attached to a frame extending several feet to windward. It has been called the flying proa, and is the swiftest sailing craft known.