Greek word
phrḗn
φρήν
What it means
the midrif, i.e. the feelings (or sensitive nature
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)
Where it comes from
probably from an obsolete (to rein in or curb; compare phrássō (φράσσω))
How the King James translates it
Every place it appears 2
1 Corinthians14:20