noun
striking the face (sumo)
Sumo term for a forceful face strike, often used as a powerful opening move.
立ち合いでぶちかましを食らった。
He took a face strike at the initial charge.
From 打ち (buchi-, prefix meaning 'forcefully') + 噛ます (kamasu, 'to bite into; to force something into'). The exact derivation is uncertain, but it likely originated in sumo slang.