Answer: burgee

AnswerCrossword Clue
BURGEESwallow-tailed flag
BURGEENavy's swallow-tailed flag.
BURGEETriangular flag.
BURGEETwo-tailed flag
BURGEENautical flag
burgeea small flag
burgeea swallow-tailed flag used especially by ships for signals or identification
burgeetriangular flag or one having a shallow, angular indentation in the fly, forming two tails, used as an identification flag, esp. by yachts