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.
n. [ OF. trompille, equiv. to F. trompette a trumpet. ] An aperture in a tromp. [ 1913 Webster ]