razor bump

razor bump (plural razor bumps)

1. (informal, usually pluralized) A skin eruption in the area of the mustache or beard, caused by irritation from shaving.
   • 1990 July 19, Lawrence K. Altman, “Health: For Some, 'No Beards' Is Painful Job Rule”, in New York Times, retrieved 4 August 2013:

     For millions of men . . . shaving is painful because they develop razor bumps on the face and neck from the closely cut ends of hairs that imbed themselves to irritate and scar the skin.

• folliculitis barbae traumatica, pseudofolliculitis barbae, shaving bump

• barber's itch

• “razor bump”, in OneLook Dictionary Search.