|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|cleaver (klē'vər) Pronunciation Key
A bifacial stone tool flaked to produce a straight, sharp, relatively wide edge at one end. Cleavers are early core tools associated primarily with the Acheulian tool culture.