2、cove: [OE] Old English cofa meant ‘small room’, as used for sleeping in or as a storeroom. It was descended from Germanic *kubon, which was probably also the ultimate ancestor of cubbyhole  (the superficially similar cubicle is not related). In the late Old English period this seems to have developed in northern and Scottish dialects to ‘small hollow place in coastal rocks, cave’, and hence (although not, apparently, until as late as the 16th century) to ‘small bay’. (The other cove , a dated slang term for ‘chap’, may come from Romany kova ‘thing, person’.)=> cubbyhole
4、early 14c.,"den, cave,"from Old English cofa"small chamber, cell,"from Proto-Germanic *kubon (compare Old High German kubisi"tent, hut,"German Koben"pigsty,"Old Norse kofi"hut, shed"). Extension of meaning to"small bay"is 1580s, apparently via Scottish dialectal meaning"small hollow place in coastal rocks"(a survival of an Old English secondary sense).
6、"fellow, chap,"slang from at least 1560s, said to be from Romany (Gypsy) cova"that man."