glimmer UK /ˈɡlɪməː/US /ˈɡlɪmɚ/noun 5verb 1forms 3 noun5 •A faint light; a dim glow.The glimmer of the fireflies was pleasant to watch. •A flash of light. •(figurative) A faint or remote possibility (as it were a flash of light).After all, Harmony Korine has no more than a glimmer of talent. — 1997 •A subtle, positive micromoment that evokes feelings of joy, safety, calm, or connection. •(old-fashioned) Mica. verb1 •To shine with a faint, unsteady light.a glimmering lampThe fireflies glimmered in the dark. formsglimmered · glimmering · glimmers