(usually endearing) A creature, an animal.

plural of critter

plural of crotch critter

(slang) A sexually transmitted pathogen, particularly pubic lice. / (slang, derogatory) A child.

(US, slang, among emergency services etc.) A person who has been badly burned.

plural of crispy critter

plural of crittercam

(colloquial) A package of instruments, including a camera, that can be attached to an animal to study its behaviour in the wild.

(informal) Resistant to damage caused by small animals.