A ray or beam of morning dew or light appearing just before sunrise, or poetically, the first light of dawn glistening on dew.
Compound of dew + beam. A poetic or archaic term combining Old English dēaw (dew) with beam (ray of light). Likely dialectal or literary usage from Middle English period.
This is the kind of obsolete poetic word that Shakespeare might have known—it captures that specific magical moment when dawn breaks and dew sparkles, showing how Old English was packed with words for tiny moments of beauty.
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