top dog

a person, group, or nation that has acquired a position of highest authority.
the winner of a competition or rivalry; champion: He was determined to be top dog at the swimming meet.
Animal Behavior. the alpha male or alpha female in a dominance hierarchy.


top-dog, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
top dog
informal the leader or chief of a group

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Idioms & Phrases

top dog

see top banana.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
Coyotes became top dog, filling the wolf's ecological niche.
Though this species is formidable it's not the top dog in the neighborhood.
She went from being top dog to pretty low on the totem pole.
Pinning the dog to the ground and growling at him so that you can show your top
Idioms & Phrases
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