Pronunciation: (chat'um), [key]
1. 1st Earl of. See Pitt, William, 1st Earl of Chatham.
2. a city in N Kent, in SE England. 56,921.
3. a city in SW Ontario, in S Canada, near Lake St. Clair. 40,952.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.