n (uncountable|firearms|machinery)recoil | Recoil; a sudden backward motion, usually in the direction of the operator.
n (countable|machinery) An accident wherein an object being cut by a rotatingblade or disk, such as a circular saw, is caught by the blade and thrown outward
n (oil drilling) A dangerous buildup of gas pressure at the wellhead
n (countable|bowling) The board separating one bowlinglane from another at the pit end