1. n. (also i) (pl. Is or I's)
1. the ninth letter of the alphabet.
2 (as a Roman numeral) 1.
Phrases and idioms:
I-beam a girder of I-shaped section. 2. pron. & n.
--pron. (obj. me; poss. my, mine; pl. we) used by a speaker or writer to refer to himself or herself.
--n. (the I) Metaphysics the ego; the subject or object of self-consciousness.
Etymology: OE f. Gmc 3.
symb. Chem. the element iodine. 4. abbr. (also I.)
1. Island(s).
2 Isle(s).