From WordNet (r) 2.0 (August 2003) [wn]:
Charles
n 1: the eldest son of Elizabeth II and heir to the English
throne (born in 1948) [syn: Charles, Prince Charles]
2: French physicist and uathor of Charles's law which
anticipated Gay-Lussac's law (1746-1823) [syn: Charles,
Jacques Charles, Jacques Alexandre Cesar Charles]
3: a river in eastern Massachusetts that empties into Boston
Harbor and that separates Cambridge from Boston [syn:
Charles, Charles River]