SmithfieldyoudaoicibaDictYouDict[Smithfield 词源字典]
place in London, celebrated since at least 17c. as a market for cattle and horses, later the central meat market. In various colloquial expressions. Originally Smethefield, from Old English smethe "smooth" (see smooth (adj.)). Smithfield ham (1908, American English) is from a town of that name in Virginia.[Smithfield etymology, Smithfield origin, 英语词源]