Strong's #5424: phren (pronounced frane)
probably from an obsolete phrao (to rein in or curb; compare 5420); 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):--understanding.
Thayer's Greek Lexicon:
́
phrēn
1) the midriff or diaphragm, the parts of the heart
2) the mind
2a) the faculty of perceiving and judging
Part of Speech: noun feminine
Relation: probably from an obsolete phrao (to rein in or curb, compare G5420)
Citing in TDNT: 9:220, 1277
Usage:
This word is used 2 times:
1 Corinthians 14:20: "be not children in understanding: howbeit in malice be ye children, but"
1 Corinthians 14:20: "in malice be ye children, but in understanding be men."