1. A young child who is just beginning to walk
   "The rug rat took wobbly steps across the living room";
   - toddler, tot, bambino, ankle-biter [informal]

Derived forms: rug rats

Type of: child, kid [informal], kiddie [informal], kiddy [informal], minor, nestling [informal], nipper [informal], shaver [informal], small fry [informal], tiddler [Brit, informal], tike [informal], tyke [informal], wean [UK, Ireland, dialect], youngster