Definition of lighty in English:

lighty

(also litie, laaitie)

noun

South African
informal
  • A boy or young male adult.

    • ‘‘This lighty (little one) called Mnisi will taste my power come April 5,’ he said amid deafening applause from a packed hall.’
    child, baby, infant, son, daughter, youngster, little one, tot, tiny tot
    View synonyms

Origin

Apparently from the adjective light from light of heart + -y; the variant laaitie shows Afrikaans influence.

Pronunciation

lighty

/ˈlʌɪti/