cup: [OE] Cup is a member of a large Indo- European family of words denoting broadly ‘round container’ that go back ultimately to the bases *kaup- (source of English head) and *keup-. This produced Greek kúpellon ‘drinking vessel’, English hive, and Latin cūpa ‘barrel’, source of English coop [13] (via Middle Dutch kūpe) and cooper ‘barrel-maker’ [14] (from a derivative of Middle Dutch kūpe). A postclassical by-form of cūpa was cuppa, from which came German kopf ‘head’ and English cup. => coop, cupola[cup etymology, cup origin, 英语词源]