floodgate

n.泄水闸(门)，防洪闸(门)

flip, flip side, flip-flop, flippancy, flippant, flippantly, flipper, flipping, flirt, flirtation, flirtatious, flit, float, floating, flock, floe, flog, flogging, flood, flood-tide, flooding, floodlight, floor, floor show, floor-board, flooring, floozie (also floosie), flop, flop-house, floppy, flora, floral, Florence, Florence Nightingale, Florentine, florid, Florida, floridness, florin, florist,