Mace is the brand name of an early type of aerosol self-defense spray invented by Alan Lee Litman in the 1960s.

What does getting maced mean?

a nonlethal spray containing purified tear gas and chemical solvents that temporarily incapacitate a person mainly by causing eye and skin irritations: used especially as a means of subduing rioters. verb (used with object), Maced, Mac·ing. (sometimes lowercase) to attack with Mace spray.

What does it mean to mace a person?

: to spray (a person) with Mace. Mace. trademark. English Language Learners Definition of Mace (Entry 4 of 2) —used for a liquid that stings the eyes and skin and that is used as a spray to defend against an attacker.