φρήν genitive, φρενός, ἡ,

[in LXX most frequently in Pr (Pro.6:32, al.) and chiefly for לֵב; also 3Ma.4:16 3Mac 5:47 ;]

chiefly in Hom. and Trag. but also in Plat. al. both sing. and pl.;

__1. in physical sense, the parts about the heart, midriff.

__2. heart, mind, thought: pl. 1Co.14:20 (see Edwards, Eng.-Gr. Lex. App. 1).†

(AS)

midriff; heart, mind, thought