finger someone as someone

finger (one) as (someone)

To identify someone as having had a particular role in something. If they have security cameras, they'll definitely be able to finger us as the thieves!
See also: finger
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

finger someone as someone

tv. to identify someone as a certain person. (As if one were pointing a finger at someone.) Last Card Louie fingered his partner as the gunman.
See also: finger, someone
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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