gun / cannon, artillery / ordnance

to hit, to beat, to strike / to give a speech

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))

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))

Alternative form of 打ち

one day

お誕生日おめでとうございます: happy birthday

sun / daytime, daylight / day

the daytime, during the day / a half day, half of a day

the eighth day of the month / eight days