ape: [OE] Ape (in Old English apa) has cognates in several Germanic languages (German affe, Dutch aap, Swedish apa), and comes from a prehistoric West and North Germanic *apan (perhaps originally borrowed from Celtic). Until the early 16th century, when English acquired the word monkey, it was the only term available for any of the non-human primates, but from around 1700 it began to be restricted in use to the large primates of the family Pongidae. [ape etymology, ape origin, 英语词源]