The definition of a roost is a place or elevated perch where birds rest or sleep.(noun)
The bar in a chicken coop is an example of a roost.
To roost is to sleep on a perch, or to stay the night.(verb)
See roost in Webster's New World College Dictionary
Origin: ME < OE hrost, akin to MDu roest < IE base *kred-, timberwork > OSlav krada, woodpile, Goth hrōt, roof
See roost in American Heritage Dictionary 4
Origin: Middle English rooste
Origin: , from Old English hrōst.
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