Shines with a weak, flickering light (verb), or small lights or faint insights (noun plural).
From the Middle English glimeren; the -s ending works as both a third-person singular present verb form and as a noun plural, showing how flexible English word endings are.
The word 'glimmers' bridges physical and emotional meaning so naturally that most people don't realize they're using metaphor—a 'glimmer of hope' instantly feels right because our brains associate faint light with fragile, precious things.
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