| Noun | 1. | roost - a shelter with perches for fowl or other birdsperch - support consisting of a branch or rod that serves as a resting place (especially for a bird) shelter - protective covering that provides protection from the weather | |
| 2. | roost - a perch on which domestic fowl rest or sleepperch - support consisting of a branch or rod that serves as a resting place (especially for a bird) | |
| Verb | 1. | roost - sit, as on a branch; "The birds perched high in the treee" | |
| 2. | roost - settle down or stay, as if on a roost | |