bowling ball

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A large, usually rubber or plastic ball having indentations for the thumb and fingers, used in bowling tenpins.
• noun A small ball of similar material having no indentations, used in certain bowling games such as duckpins and candlepins.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun bowling A solid ball used in the sport of bowling, with finger holes allowing it to be picked up.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a large ball with finger holes used in the sport of bowling