What does 'Spitting image' mean?

If a person is the spitting image of somebody, they look exactly alike.
('Spit and image' is also used and some suggest it is a hasty pronunciation of "spirit & image", to suggest that someone completely resembles someone else. Example: He's the spirit & image of his grandfather.) 



All idioms have been editorially reviewed, and submitted idioms may have been edited for correctness and completeness.

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