add emphasis to the verb, violently, strongly, quickly, suddenly, (e.g. 打(ぶ)ち込(こ)む (buchikomu), ぶっ殺(ころ)す (bukkorosu), ぶん殴(なぐ)る (bunnaguru))

adds emphasis to the verb, (e.g. 打(う)ち寄(よ)せる (uchiyoseru), 打(う)ち捨(す)てる (uchisuteru), 打(う)ち続(つづ)く (uchitsuzuku))

(religion) nail that was used to crucify Jesus Christ

(idiomatic, figuratively) to give a warning, to remind a person of

having no effect

a surname

nailhead, head of a nail

(colloquial) current boyfriend

everything

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)