pepper spray
noun /ˈpepə spreɪ/
/ˈpepər spreɪ/
[countable, uncountable]- a chemical substance made from hot peppers that causes somebody's eyes, nose and throat to sting (= be painful) when it is sprayed on them
- Someone let off a canister of pepper spray and we had to evacuate the club.
- The police used pepper spray on demonstrators.