An instruction that one should ask for more information about something inside a particular place. Typically written on signs posted outside of businesses. Help wanted, inquire within. Hey, the sign outside said, "Inquire within," so here I am! Can I get an application for the job?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
to ask questions of a person inside [some place, such as a store or office]. (Formula. On a sign posted outside.) "Help wanted. Inquire within," read the sign on the door. If you want to apply, you must inquire within.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.