一枚噛む
1
to participate in (as a member);to get involved in
どうも彼はその件に一枚かんでいるようだ。
It sounds to me as if he has something to do with the matter.
Other forms
一枚嚙む 【いちまいかむ】 (rarely used kanji form) · 一枚かむ 【いちまいかむ】 (search-only kanji form)