ranch (n.)youdaoicibaDictYouDict[ranch 词源字典]
1808, "country house," from American Spanish rancho "small farm, group of farm huts," from Spanish rancho "mess-room," originally, "group of people who eat together," from ranchear "to lodge or station," from Old French ranger "install in position," from rang "row, line" (see rank (n.)).

Sense of "large stock-farm and herding establishment" is from 1831. Of houses, "single-story, split-level" (adj.) from 1950; as a noun from 1960. Ranch-house attested from 1862.[ranch etymology, ranch origin, 英语词源]
ranch (v.)youdaoicibaDictYouDict
1866, from ranch (n.). Related: Ranched; ranching.