A  /ə,eɪ/  

Indefinite article, Vowel

Synonyms: One, some



1.The first letter of the English alphabet

2. used when mentioning someone or something for the first time in a text or conversation.

  • used with units of measurement to mean one such unit.
  • one single; any.
  • used when mentioning the name of someone not known to the speaker.
  • someone like (the name specified).
  • 3. 
    used to indicate membership of a class of people or things.
  • 4. in, to, or for each; per (used when expressing rates or ratios).
  • 5. it is also a vowel.

1. A for Apple.

2. A student came out of the classroom.

3. Poonam is a teacher.