Webster’s Revised Unabridged Dictionary · 1913
Roost
Roost, n. Roast. [Obs.] Chaucer.
Roost (ro͞ost), v. t. See Roust, v. t.
Roost, n. [AS. hrōst; akin to OD. roest roost, roesten to roost, and probably to E. roof. Cf. Roof.] 1. The pole or other support on which fowls rest at night; a perch.
He clapped his wings upon his roost. Dryden.
2. A collection of fowls roosting together.
At roost, on a perch or roost; hence, retired to rest.
Roost, v. i. [imp. & p. p. Roosted; p. pr. & vb. n. Roosting.] 1. To sit, rest, or sleep, as fowls on a pole, limb of a tree, etc.; to perch. Wordsworth.
2. Fig.; To lodge; to rest; to sleep.
O, let me where thy roof my soul hath hid, O, let me roost and nestle there. Herbert.