- a perch on which birds, esp. domestic fowls, can rest or sleep
- a place with perches for birds
- a place for resting, sleeping, etc.
Origin of roostMiddle English from Old English hrost, akin to Middle Dutch roest from Indo-European base an unverified form kred-, timberwork from source Old Church Slavonic krada, woodpile, Gothic hr?t, roof
- to rest, sit, sleep, etc. on a perch
- to stay or settle down, as for the night
come home to roost
rule the roost