I

Ⅰ.

I [1] (also i) ► NOUN (pl. Is or I's) 1) the ninth letter of the alphabet. 2) denoting the next after H in a set. 3) the Roman numeral for one.

Ⅱ.

I [2] ► PRONOUN (first person sing. ) ▪ used by a speaker to refer to himself or herself.

ORIGIN Old English.