Definition of first love in English:

first love

noun

  • 1The person with whom one falls in love for the first time.

  • 2Devotion to God experienced at a person's conversion.

  • 3The first experience of falling in love or the devotion associated with this.

  • 4One's favourite occupation, pastime, possession, etc.

Origin

Late Middle English; earliest use found in Thomas Malory (d. 1471), author.