To get someone (sometimes with a touch of trickery) to reveal details that likely would not have been volunteered. Usually followed by "out of," as in "worm information out of." Bill was keeping quiet about his break-up, but I knew I could worm information out of him if I tried hard enough. Kira worms information about upcoming tests out of her teachers by complimenting them and straightening up their classrooms.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.