1 n. a person who loves the ocean, swimming, etc.
2 n. a person under the zodiac sign of Aquarius; an Aquarian.
3 n. an infant who dies by drowning.
1. "He just bought a little place on the waterfront...he's such a waterbaby."
2. "She's a waterbaby, so she'll go perfect with me being a Leo."
3. "It's so sad...what a sweet child to die a waterbaby."