Definition of roost

• n. - Roast.
• v. t. - See Roust, v. t.
• n. - The pole or other support on which fowls rest at night; a perch.
• n. - A collection of fowls roosting together.
• v. i. - To sit, rest, or sleep, as fowls on a pole, limb of a tree, etc.; to perch.
• v. i. - Fig.; To lodge; to rest; to sleep.