Each definition is rare or obsolete, but that just means you can save your breath to cool your porridge.
Okay, look, all the jokes can’t be good. You have to expect that once in a while.
a. To make cold, to cool. Also fig.: †to make less ardent, vigorous, or vital, to assuage, quench (obs.). Now arch. and rare.
b. To refresh, reinvigorate. Also refl. Obs.
2. intr. To become cold, to cool; (fig.) to become less ardent. Obs.