(Internet slang, dated) Windows (an operating system)

all day

the first day of the month (solar or lunar calendar)

(obsolete) one day, 24 hours / (obsolete) the daytime, the period from dawn until dusk

(rare, obsolete) (all senses appear to be identical as for hitohi above)

(literary) one day, 24 hours / (literary) the daytime, the period from dawn until dusk / (literary) (figuratively) a short period of time

window

window / (regional, dialect, Etchū region) a deep gap in a mountain ridge (so called for the way the wind blows through, like a window)

(the) outside

外, 他: other, the rest