Mining. U.S. [a. G. trommel DRUM.] A rotating cylindrical sieve or buddle used for washing and sizing ores.
1877. in Knight, Dict. Mech.
1886. trans. Callon’s Lect. Mining, xxiii. III. 27. A trommel is a barrel in the form of a cylinder or of a truncated cone, horizontal or slightly inclined.
