<p><strong>noun</strong></p><ul><li>a perch upon which birds or fowls rest at night.</li><li>a large cage, house, or place for fowls or birds to roost in.</li><li>a place for sitting, resting, or lodging.</li></ul><p><strong>verb</strong></p><ul><li>(used without object) to sit or rest on a roost, perch, etc.</li><li>to settle or stay, especially for the night.</li></ul>