toddler(n = noun.person) bambino, tot, yearling - a young child;
is a kind of child, fry, kid, minor, nestling, nipper, shaver, small fry, tiddler, tike, tyke, youngster
Derived form verb toddle₁

   One who toddles; especially, a young child. Mrs. Gaskell. [1913 Webster]

toddler, n. a child who is just beginning to walk.

Derivative:
toddlerhood n.