one, 1 / the first in order, foremost / the beginning / the best / a kind of; one of something / (card games) an ace / unity / the bottom string of a shamisen or other Japanese musical instrument

each person

passive, inactive, timid

(colloquial) current boyfriend

everything

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

everyone, one and all

Alternative form of 一々

one person / singleness, singularity / one's own efforts or strengths / an unmarried person, single

(rare) the first day of the month