rape (v.) Look up rape at Dictionary.com
late 14c., "seize prey; abduct, take by force," from rape (n.) and from Anglo-French raper (Old French rapir) "to seize, abduct," a legal term, probably from past participle of Latin rapere "seize, carry off by force, abduct" (see rapid).

Latin rapere was used for "sexually violate," but only very rarely; the usual Latin word being stuprare "to defile, ravish, violate," related to stuprum (n.), literally "disgrace." Meaning "to abduct (a woman), ravish;" also "seduce (a man)" is from early 15c. in English. Related: Raped; raping. Uncertain connection to Low German and Dutch rapen in the same sense.
rape (n.1) Look up rape at Dictionary.com
early 14c., "booty, prey;" mid-14c., "forceful seizure; plundering, robbery, extortion," from Anglo-French rap, rape, and directly from Latin rapere "seize" (see rape (v.)). Meaning "act of abducting a woman or sexually violating her or both" is from early 15c., but perhaps late 13c. in Anglo-Latin.
rape (n.2) Look up rape at Dictionary.com
kind of cruciferous plant (Brassica napus), late 14c., from Old French rape, from Latin rapa, rapum "turnip," from PIE *rap- (cognates: Greek hrapys "rape," Old Church Slavonic repa, Lithuanian rope, Middle Dutch roeve, Old High German ruoba, German Rübe "rape, turnip"). Usually grown to feed sheep, an oil made from it is used in cooking (see canola).