to foam at the mouth
01
怒り狂う, 激怒する
to become extremely furious about something
例
He was foaming at the mouth when he found out they had deleted his files.
自分のファイルを削除されたと知って、彼は怒り狂った。
02
*** (especially of an animal) to have a mass of small bubbles in and around its mouth, especially because it is sick or angry



























