Toddler (noun)

1. A young child who is learning to walk.
2. A child between the ages of one and three.

Origin:

From the phrase "to toddle" meaning "to walk unsteadily".

Examples:

1. He is a toddler and still learning to walk.
2. She is a toddler and starting to talk.
3. The toddler was playing with blocks.
4. The toddler was unsteady on her feet.
5. The toddler was fascinated by the puppy.