late 14c., "to trace back, attribute, assign," from O.Fr. referer (14c.), from L. referre "to relate, refer," lit. "to carry back," from re- "back" + ferre "carry" (see infer). Meaning "to commit to some authority for a decision" is from mid-15c.; sense of "to direct (someone) to a book, etc." is from c.1600.