which (of three or more) / which one /

a Roman numeral

(typography) the ban on separating multiple successive digits during line breaking

(Christianity) the Number of the Beast

an Arabic numeral

(colloquial) current boyfriend

everyone, one and all

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

number (on an athlete's uniform's back); jersey number, uniform number, player number, shirt number

(computing) line number