c.1248, "cloth of reddish-brown color" (sense of the color itself is first recorded 1422), from O.Fr. rousset, from rosset (adj.) "reddish," dim. of ros, rous "red," from L. russus, related to ruber "red," from PIE *reudh- "red" (see red). As a color name, attested from 1532.
The word was first applied to a type of apples 1629, to a type of pears 1725.