ふんどしを締めてかかる

ふんどしを締めてかかる、褌を締めてかかるふんどしをしめてかかる fundoshiwoshimetekakaru

JMdict entry #2838292

expressions (phrases, clauses, etc.)Godan verb with 'ru' ending idiomatic expression to roll up one's sleeves and get to work; to buckle down