a place where birds sleep （鸟类的）栖息处 Word OriginOld English hrōst, related to Dutch roest; of unknown ultimate origin.
Idioms
rule the roost
- (informal)
to be the most powerful member of a group 当头头；充当首领；主宰 Liverpool ruled the roost in English football for a decade. 十年来，利物浦一直是英国足球的霸主。