closed door

Idioms & Phrases

closed door

  1. An obstacle or restriction, as in There are no closed doors in the new field of gene therapy. [First half of 1900s]

  2. close one's doors. See close down. Also see behind closed doors; close the door.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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