Extended Strong's Greek Lexicon (Abbott-Smith based)
thinking
Usage: 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)