Synonyms to water gap

aqueduct, arroyo, bed, canal, canalization, channel, conduit, course, creek bed, crimp, culvert, cut, dike, ditch, donga, dry bed, duct, entrenchment, flume, fosse, goffer, gulch, gully, gullyhole, gutter, ha-ha, headrace, irrigation ditch, kennel, moat, nullah, pleat, race, river bed, riverway, runnel, sluice, spillbox, spillway, stream bed, streamway, sunk fence, swash, swash channel, tailrace, trench, trough, wadi, water carrier, water channel, water furrow, water gate, watercourse, waterway, waterworks, Colonial bed, Hollywood bed, Japanese garden, a world-without-end bargain, accommodation, accommodations, alliance, alpine garden, arboretum, band, base, basement, basin, basis, bassinet, bearing wall, bed and board, bed down