Strong's H2910 · Hebrew

tuwchah

too-khaw'

from 2909 (or 2902) in the sense of overlaying; (in the plural only) the kidneys (as being covered); hence (figuratively) the inmost thought

Scholarly Lexicons

Brown-Driver-Briggs (BDB)

 H2910 טֻחוֹת , טֻחָה  

Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain