A small, often rubber, toy shaped like a duck, typically used by children during bath time. The toddler giggled as she played with her yellow duckie in the bathtub.
A term of endearment or affection, often used to refer to someone in a fond or playful manner. Come here, duckie, and let me give you a hug.
A duck, especially a duckling. The children watched the fluffy duckies swim after their mother.