double, twofold / Short for 二重瞼 (futae-mabuta).

(archaic, possibly obsolete) two days, a two-day period

second (2nd), number two

a surname

a male given name

two hundred

two hundred

two characters

the second dimension / (by extension, Internet slang) the 2D (i.e. anime, manga, video games, etc.) world; the fictional world

(education) second year in senior high school; eleventh grade / (education) second-year student in senior high school