at roost 栖息着, 睡着
- I'm afraid you won't see John tonight, he was tired and went to roost at half past seven.
恐怕你今晚见不到约翰了,他很累,七点半就去睡了。
Roost \Roost\, n. [AS. hr[=o]st; 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.