Medical Definition of sharp
: a medical instrument (as a scalpel, lancet, or syringe needle) that is sharp or may produce sharp pieces by shattering <As I passed the hemostat, the needle clipped my glove and my skin … I then disposed of the sharp and tried to force bleeding.—The Journal of the American Medical Association, 4 Jan. 2012>—usually used in plural <It is no longer legal to dispose of sharps in the regular trash, Health Director Jeanne M. Galloway said in announcing the new collection station.—Angela Carbone, The Springfield (Massachusetts) Republican, 18 Oct. 2008>
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