い メスが入る Show inflections LinksSentence search for メスが入るSentence search for メスがいるKanji details for 入Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ru' ending1. to operate; to clean up; to inquire (into); to take drastic measuresSee also メスを入れる メスをいれる Discussions Log in to talk about this word.