I

pronoun2

1. •
   used before a verb to mean yourself, the person speaking

   • I drove my sister and myself to school.
2. •
   (nonstandard) The speaker or writer, referred to as the grammatical object, of a sentence.

   • Mom drove my sister and I to school.

noun5

1. •
   The ego.

   • Am I a double personality? Are there two “I’s” in my anatomy—one a conscious “I,” giving attention to what I am doing, and another unconscious “I,” giving attention to something entirely different? — 1916
2. •
   (US) Abbreviation of interstate.

   • I-95 begins at Houlton, Maine and terminates at Miami, Florida, connecting numerous major cities in the East Coast.
3. •
   (US) Abbreviation of independent.
4. •
   Abbreviation of instruction.
5. •
   Abbreviation of instrumental case.

noun1

1. •
   Abbreviation of instruction cache.