Emily Dickinson Lexicon

GLIM'MER, n.

1. A faint light; feeble scattered rays of light.
2. In mineralogy, mica, glist, muscovy-glass; a mineral rarely found in regular crystals. Usually it appears in thin, flexible, elastic lamins, which exhibit a high polish and strong luster. It is an essential ingredient in granite, gneiss, and mica slate. Cleaveland.