a indefinite article ஒரு , ஓர்.

1 used before countable or singular nouns referring to people or things that have not already been mentioned

  • a man
2 used before uncountable nouns when these have an adjective in front of them, or phrase following them
  • a good knowledge of French a sadness that won’t go away
3 any; every
  • A lion is a dangerous animal.
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