noun
slaying 100 enemies with a sword
Historical or fictional feat of killing 100 opponents in battle; often associated with samurai legends.
彼は戦場で百人斬りを成し遂げたと伝えられている。
He is said to have accomplished the slaying of 100 enemies on the battlefield.
noun
Slang, often used humorously or boastfully about sexual conquests; can imply a large number of partners.
合コンで百人斬りを目指すなんて、冗談でも引くよ。
Even as a joke, aiming to sleep with 100 people at group dates is off-putting.