ETYM Cf. as. cop, copp, head, top, Dutch kop, German kopf, kuppe, Late Lat. cuppa cup (cf. Eng. brainpan), and also w. cob tuft, spider, cop, copa, top, summit, cobio to thump. Related to Cop top, Cup.
1. dialect England; A rounded mass, lump, or heap; A mixture of unburnt clay and straw used especially for constructing walls of small houses in England.
2. A crudely struck old Spanish coin of irregular shape.