bitch: [OE] The antecedents of Old English bicce ‘female dog’ are obscure. It may come from a prehistoric Germanic *bekjōn-, but the only related form among other Germanic languages appears to be Old Norse bikkja. The superficially similar French biche means ‘female deer’, and is probably not related. The use of the word as a derogatory term for ‘woman’ seems to have originated in the 14th century. [bitch etymology, bitch origin, 英语词源]