Fiber gun

a kind of steam gun for converting, wood, straw, etc., into fiber. The material is shut up in the gun with steam, air, or gas at a very high pressure which is afterward relieved suddenly by letting a lid at the muzzle fly open, when the rapid expansion separates the fibers.

See also: Fiber

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.