roost /ɹuːst/noun 6verb 3forms 3phrases 3 noun6 •The place where a bird sleeps (usually its nest or a branch).He clapp'd his wings upon his roost. — 1700 •A bedroom. •A group of birds roosting together.a roost of birds is merely a fortuitous aggregation of individuals that have strategically placed their roost site to minimize distance to their supplemental and main food sources — 2018 •Synonym of perch (“a position that is secure and advantageous”). •A kick which causes the ball to travel a long distance. •(Scotland) The open cross-joists or inner roof of a cottage or living space. verb3 •To settle on a perch in order to sleep or rest. •(figurative) To spend the night.The UPS package centre for central London, a brief walk from Kentish Town tube station, holds a below-ground bay in which 170 vans roost every night. — 2019 •To kick (a ball) a long distance. formsroosted · roosting · roosts Phrases with roost cock of the roostA proud or conceited person. come home to roostTo have negative consequences (of an action in the past). rule the roostTo be the controlling member(s) of a family, organization, or other group.