Hebrew and Greek Strong's Dictionary with all the definitions plus combined with every place that word is used in the definitions.
Complete index of every word used in both the Hebrew and Greek Strong's Dictionary in English Word order.
Hebrew and Greek Expanded Dictionary
kidneys 02910 ## tuwchah {too-khaw'} ; from 02909 (or 02902) in the sense of overlaying ; (in the plural only) the {kidneys} (as being covered) ; hence (figuratively) the inmost thought : -- inward parts .
kidneys 03629 ## kilyah {kil-yaw'} ; feminine of 03627 (only in the plural) ; a kidney (as an essential organ) ; figuratively , the mind (as the interior self) : -- {kidneys} , reins .