'Sunbeam' definitions:

Definition of 'sunbeam'

noun

A ray of sunlight [syn: sunbeam, sunray]

Definition of 'Sunbeam'

From: GCIDE

Sunbeam \Sun"beam`\, n. [AS. sunnebeam.] A beam or ray of the sun. "Evening sunbeams." --Keble. [1913 Webster]
Thither came Uriel, gliding through the even On a sunbeam. --Milton. [1913 Webster]

Synonyms of 'sunbeam'

From: Moby Thesaurus

broad day,
dawn,
day,
day glow,
daylight,
dayshine,
daytide,
daytime,
dusk,
full sun,
green flash,
light of day,
midday sun,
noonlight,
noontide light,
ray of sunshine,
shine,
sun spark,
sunbreak,
sunburst,
sunlight,
sunshine,
twilight

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