1. [Austral, informal] A very young child (birth to 1 year) who has not yet begun to walk or talk
   "the bub began to cry again";
   - baby, babe [literary], infant, bundle of joy
    
2. [N. Amer, informal] A familiar or mildly disrespectful term of address for a boy or man
   "Hey bub, watch where you're going!"

Derived forms: bubs

Type of: child, kid [informal]

Encyclopedia: Bub