1. one; name of a number; once
E.g.: 一列 (a single line), 一度 (once), 一個 (one piece)
2. a certain one
E.g.: 一説 (one theory), 一夜 (one night), 一例 (one example)
3. a little; just a bit; slight
E.g.: 一刻 (a moment), 一瞬 (an instant), 一笑 (a laugh)
4. beginning; the best; most excellent
E.g.: 一番 (number one), 一流 (first-rate), 第一 (first)
5. exclusively; solely; only that
E.g.: 一意 (wholeheartedly), 一散 (at full speed), 専一 (exclusively)
6. to make into one; all; everything; equal; uniform
E.g.: 一括 (lump together), 一様 (uniform), 均一 (uniformity)
