Crossword Clue:

a trysail a type of sail

AnswerCrossword Clue
LATEENType of sail
LATEENType of sail.
LUGType of sail.
LATTEENType of sail: Var.
FLAPSound of a sail in a gale.
FURLINGQEDEnd of a proof showing the proper method of securing a sail to a mast?