waterside I. \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\noun Etymology: Middle English, from water + side : the land (as the seaside or a riverside) bordering a body of water II. adjective 1.: of, relating to, or located on the waterside < waterside trees > 2.: employed along the waterside < waterside workers > also: of or relating to the workers along the waterside < a waterside strike >