φρήν (phrḗnfranenoununderstanding)
[Grk] φρήν LN: 26.15 GK: G5856 Hebrew: כְּסִיל, לֵב, מַנְדַּע
Derivation: probably from an obsolete φράω (to rein in or curb; compare φράσσω);
Strong's: the midrif (as a partition of the body), i.e. (figuratively and by implication, of sympathy) the feelings (or sensitive nature; by extension (also in the plural) the mind or cognitive faculties)
KJV: --understanding.
See: φράσσω