Wordnet 3.0
NOUN (1)
1.
a person who travels through the water by swimming;
- Example: "he is not a good swimmer"[syn: swimmer, natator, bather]
WordNet (r) 3.0 (2006):
natator
n 1: a person who travels through the water by swimming; "he is
not a good swimmer" [syn: swimmer, natator, bather]