noun
flock of crows; murder of crows
Archaic term for a group of crows. In modern Japanese, カラスの群れ is the usual expression.
古い文献に「群烏」という言葉が見られる。
The word 群烏 can be found in old documents.
Modern, everyday term for a flock of crows. 群烏 is its archaic equivalent.
Compound of 群 (むら, 'group') and 烏 (からす, 'crow'), with rendaku voicing. The exact historical derivation is uncertain, but the word follows a common pattern for collective nouns.