noun[in singular] chiefly North American
The time in the morning when the sun appears or full daylight arrives: they worked from sunup to sundown
More example sentences
- At sunup and sundown, the lagoon becomes a communal meeting place for locals.
- From sunup to sundown, an overwintering bird's focus in life is to feed its face.
- For the record, my dogs sleep in the house, so there is no night disturbance, and the birds sleep sundown to sunup, so there are no night noises coming from my yard.
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