undine
/ˈʌndiːn/
noun
- A female water spirit in folklore, often said to be able to gain a soul by marrying a human.
- My grandmother used to warn us not to swim too far out, or an undine might pull us under.
- In the painting, an undine rises from the river, her hair tangled with water lilies.
- The old story tells of an undine who fell in love with a mortal knight.