Definition of "sidekick" [sidekick]

Slang A close companion or comrade. (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.

Use "sidekick" in a sentence

"For Harry Potter, his sidekick is a white owl named Hedwig."
"He dates a model, and his sidekick is his butler, a weedy ex-con of some kind."
"Unless having a black sidekick is supposed to be some kind of magnanimous humanitarian gesture."

Words like "sidekick"