Strong's G5594 · Greek
ψύχω
psucho · psoo'-kho
a primary verb; to breathe (voluntarily but gently, thus differing on the one hand from 4154, which denotes properly a forcible respiration; and on the other from the base of 109, which refers properly to an inanimate breeze), i.e. (by implication, of reduction of temperature by
Scholarly Lexicons
Abbott-Smith Manual Greek Lexicon
ψύχω (G5594)
1 (KJV) ψύχω [in LXX for קוּר , שׁטח ;] to breathe, blow ; hence, to make cool . Pass., to grow cool : metaph., Mt 24:12 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain