Search Result for "ex-directory": 
Wordnet 3.0

ADJECTIVE (1)

1. (of telephone numbers) not listed in the telephone directory;
- Example: "an ex-directory number" (British usage); 



WordNet (r) 3.0 (2006):

ex-directory
    adj 1: (of telephone numbers) not listed in the telephone
           directory; "an ex-directory number" (British usage)