Bitesheep is an obscure dialectal compound of bite + sheep, used for a plant or pasture condition affecting sheep; its precise origin and reference are poorly documented. The historical trail runs through bītan in Old English and scēap in Old English. Morphologically, bitesheep is transparent: an obscure dialectal compound of bite + sheep, used for a plant or pasture condition affecting sheep. Used as a noun, bitesheep now means "dialectal name for a plant or condition causing sheep to bite or fret, or a rough pasture", so the present definition can be read against the older forms and meanings. The same lexical family is also visible in related forms such as bite and sheep. That uncertainty is part of the entry: the safest account is the attested form and the limited comparisons preserved with it.