כִּלְיָה kilyâh (H3629)

a kidney (as an essential organ); figuratively, the mind (as the interior self)

1) kidneys 1a) of physical organ (lit.) 1b) of seat of emotion and affection (fig.) 1c) of sacrificial animals 2) (TWOT) reins

feminine of כְּלִי (H3627) (only in the plural);