What is "trombe"

Tromp \Tromp\, n. [F. trombe, trompe, a waterspout, a water-blowing machine. Cf. Trump a trumpet.] A blowing apparatus, in which air, drawn into the upper part of a vertical tube through side holes by a stream of water within, is carried down with the water into a box or chamber below which it is led to a furnace. [Written also trompe, and trombe.]