Lewis & Short

2. rāpīna, ae, f. [rapum].

  1. I. A turnip-field, Col. 11, 2, 71.
  2. II. Transf., a turnip, rape, Cato, R. R. 5, 8; 35, 2; Inscr. Fratr. Arv. 41, 30 (2270 ap. Orell.).