This verb means to make cool or cold, providing refreshment through cooling. Luke 16:24 records the rich man in Hades begging Abraham to send Lazarus 'that he may dip his finger in water and cool my tongue.' The aorist subjunctive expresses his desperate request for relief. Classical usage shows cooling or chilling things, and metaphorically dampening ardor. The cross-linguistic witnesses uniformly preserve the cooling/refreshing imagery. The single drop of water to cool the tongue emphasizes both the rich man's torment and the impossibility of even minimal relief across the great chasm separating Hades from Abraham's side.