What is the meaning of fewer?

adjective

• A quantifier that can be used with count nouns and is often preceded by `a'; a small but indefinite number.
  • usage: "a few weeks ago"; "a few more wagons than usual"; "an invalid's pleasures are few and far between"; "few roses were still blooming"; "few women have led troops in battle"
  • synonyms: few
• Comparative of `few' used with count nouns. ( quantifier meaning a smaller number of)
  • usage: "fewer birds came this year"; "the birds are fewer this year"; "fewer trains were late"