Boddler is the name we gave to our children when they were no longer really babies but were not quite toddlers either - i.e. when they had started moving about so getting into scrapes but not actually walking and toddling about. The advantage of the word is that if it is spoken forcibly it does come out as a good swear word.
Oh! you little boddler!
by Imogen Sykes February 5, 2008
A young child who is not an infant but not a toddler. Usually when babies turn one they become a boddler and become a toddler when they are two.
AWW... Look how little Mason has grown from a baby to a *boddler*