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n. A modified surfboard having a single sail mounted on a mast that pivots on a ball joint, ridden while standing up.

verb-intransitive. To engage in sailboarding.

n. A recreational device consisting of a surfboard with a small sail on a flexible mast. Also called a windsurf board.

v. To practice the sport of using a sailboard.

""sailboard" or the "sole occupant" aboard vessels under 26 feet that are using an engine"

windsurf   

foranother    half-century-old    Baltimore    day-long    otter-trawl