I

Universal Words noun, pronoun, symbol, abbreviation noun (also i) [C,U] (plural I's, i's ) the 9th letter of the English alphabet: 'Island' begins with (an) I / 'I'. IDIOMS see DOTv. pronoun used as the subject of a verb when the speaker or writer is referring to himself/herself: I think I'd better go now. * He and I are old friends. * When they asked me if I wanted the job, I said yes. * I'm not going to fall, am I? * I'm taller than her, aren't I? seealsoME symbol (also i) the number 1 in ROMANNUMERALS abbreviation (also I.) (especially on maps) Island(s); ISLE(S)