I play the guitar.

I Pronoun

— The person who is speaking or writing I am writing this, and you are reading it.

I Noun

— The ninth letter or the alphabet; previous H, next J. I is a vowel.

I Symbol

— A symbol meaning first, as in "George I" (which is said as "George the first"). — The symbol for iodine on the periodic table of elements. — The symbol for electrical current.

I Number

— This is the roman numeral for one (1). It may be written as I or i.

i Noun

— The ninth letter or the alphabet; previous H, next J. I is a vowel.

play Verb

— To do things for amusement. Children like to play all day. — If you play a musical instrument, you make music using it. He plays guitar in a rock and roll band.

play Noun

— Something a group of actors does, in a theatre, for people to watch. The actors on the stage had clothes with bright colors.

the Determiner

— Used, instead of a, to reference something specific, already known to exist. Compare "I read a book." and "I read the book." — Used with a stress, to show that the word following is special. Are you the John Smith that I went to school with? — Used with an adjective that acts like a noun to mean all of the people concerned The poor are always with us. — Used with superlatives forms of adjectives and adverbs. You are the best.

guitar Noun

— A guitar is a stringed musical instrument, usually with six strings, but sometimes more. It is used to play many kinds of music, including classical, rock, jazz, and bluegrass. John played the Edvard Grieg song "Morning Mood" on his guitar.