neck and neck

neck and neck idiom
So close that the advantage or lead shifts from one to the other or is virtually indistinguishable, as in The two are neck and neck in developing a new operating system for the computer. The term comes from horse racing, where the necks of two horses in competition appear to be side by side. [Early 1800s] For a synonym, see nip and tuck.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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