Often, clippers. (often used with a plural verb) a cutting tool, especially shears:
Usually, clippers. (usually used with a plural verb) a mechanical or electric tool for cutting hair, fingernails, or the like: He told the barber, “No clippers on the sides, please.”.
Nautical. Also called clipper ship. a sailing ship built and rigged for speed, especially a type of three-masted ship with a fast hull form and a lofty rig, built in the U.S. from c1845, and in Great Britain from a later date, until c1870, and used in trades in which speed was more important than cargo capacity.
Electronics. a device that gives output only for an input above or below a certain critical value.