lay the finger on (one)(redirected from lain the finger on)
lay the finger on (one)
To identify and accuse one of doing something; to inform on one to an authority figure. Don't you dare lay the finger on me! I had nothing to do with the deal going sour. I fear my life is in danger now that I've lain the finger on the mob boss.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.