Slang Zero, especially when written as a numeral to indicate that no points have been scored.(noun)
Slang A swelling or lump, especially one caused by being struck.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.