くちをきる

口を切る

表記・読み：口をきる・くちをきる

1. 1

   to be the first to speak; to break the silence

   expressions (phrases, clauses, etc.)五段動詞（る）idiomatic expression
2. 2

   to open something for the first time; to broach (e.g. a cask); to break a seal; to break open

   expressions (phrases, clauses, etc.)五段動詞（る）