To walk with short, unsteady steps, typically in reference to a young child. The toddler began to toddle across the room, giggling with each step.
To move or walk in a leisurely or aimless manner. After lunch, we decided to toddle down to the park to enjoy the sunshine.
To leave or depart, often used informally with the particle “off.” It's getting late, so I'd better toddle off home.