† ˈcoulant,ppl.a.Obs.rare—1. [a. F. coulantpres.pple. of couler to flow: see cool v.2] Flowing. 1632Lithgow Trav. vii. 318 Epiphanio calls it Chrysoroas, that is, running, or coulant in gold.1656Blount Glossogr., Coulant, gliding, slipping, flowing gently along.