/raynz/ , n.pl.
1. the kidneys.
2. the region of the kidneys, or the lower part of the back.
3. (esp. in Biblical use) the seat of the feelings or affections, formerly identified with the kidneys.
[ bef. 1000; ME reines, reenes reins; cf. OE (once) renys; both renes kidneys, loins (pl.); cf. RENAL ]