rape [reɪp], sb.[entry#5]
Etymology: ad. L. rāpum neut., rāpa fem., a turnip. In sense (def#2) perh. partly from Dutch raap turnip, rape; cf. G. (now obs. or dial.) rape, rabe(n, räbe(n turnip.
1 (With a or in pl.) a A turnip (? or radish). b A plant of rape (2 b). Obs. In 15th c. glossaries rape is used to render both rāpa and raphanus. In K. Alis. (Weber) 4983 rabben is not a form of rape, but an error for crabben of the MS.
? C. 1390 Form of Cury in Warner Antiq. Culin. (1791) 4 - Take rapus, and make hem clene..parboile hem [etc.].