Meaning of MACE in English

MACE

(LIQUID) [noun] [U] [trademark] - a chemical in a container which, when sprayed into a person's face, causes their eyes to sting and become full of tearsEven though it's illegal in Britain, some women carry Mace with them at all times, in case they're attacked.

Cambridge English vocab.      Кембриджский английский словарь.