(Internet slang) first comment; (interjection) first!

(informal, chiefly in the negative) the slightest amount (in reference to one's knowledge, thought, etc.) / Used other than figuratively or idiomatically: see 一, ミリ.

一月: January / １月: January / 1月: January

小一: first-year student of an elementary school

彰一: a male given name / 正一: a male given name / 省一: a male given name / 章一: a male given name / 松一: a male given name / 詔一: a male given name / 昇一: a male given name

一時: one o'clock / 一字: one letter, one character / 一事: one thing / 一次: first, preliminary

英知, 叡智: wisdom / エイチ: the letter h, H; lewd

英智, 映智, 栄智, 慧知: a male given name

市街地: urban area

利一: a male given name