From Longman Dictionary of Contemporary Englishtoddlertod‧dler /ˈtɒdlə $ ˈtɑːdlər/ ●○○ noun [countable] 
SSCa very young child who is just learning to walk► see thesaurus at baby
SSCa very young child who is just learning to walk► see thesaurus at babyExamples from the Corpus
toddler• As a toddler, he was attacked and injured by the family's pet dog.• A toddler was squatting in the middle of the carpet, thumb in mouth.• Above 50% of infants and toddlers were able to discontinue the laxative after three to four months.• Then, in marked contrast, there are the several photos of smiling, pink-cheeked toddlers raggedly clipped from magazines.• But neither could you escape the fact that it seemed specifically designed for bumping off toddlers.• Today middle-class parents read books on toddler development, attend parent workshops, and learn how to talk so children will listen.• Instead, the toddler may simply look around and get irritable, and appear more and more scattered.• Bulger court case starts Two ten-year-old boys have pleaded not guilty to the abduction and murder of the toddler, James Bulger.• Your toddler will be fascinated by the spongy texture of the filled bag and the movement of the floating toys. 