noun
( -s )
Etymology: French & Italian; French chiourme from Italian ciurma, from Latin celeusma, command given by head oarsman so that rowers can keep in time, from Greek keleusma, keleuma command, command given to rowers, from keleuein to command, incite; akin to Greek kellein to land a ship, drive on — more at hold
obsolete : a gang of galley slaves