(neologism) The process of building pretotypes to test the viability of a product before attempting to actually prototype it.

(anthropology, dated in academic contexts) A member of one of various peoples native to the Horn of Africa, generally restricted to those that speak Cushitic languages.

(informal, humorous) Incapable of being misused even by the stupidest or most careless of users.

(slang) An excessively talkative CB radio user; a chatterbox.