loop in(redirected from loop them in)
To make or keep one informed about something, such as a plan or project. A noun or pronoun can be used between "loop" and "in." We've hired a new intern to help you with data entry, so be sure to loop her in about the current project. I'll need to go loop in the rest of the team regarding these changes.
See also: loop
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.