[1] : WordNet (r) 2.0

telephone extension
     n : an additional telephone set that is connected to the same
         telephone line syn: extension, extension phone
see also:
extension extension phone 

Extension >> E Words
Extension, definition of term: Extension
extension_pag1.html

Telephone >> T Words
Telephone, definition of term: Telephone
telephone_pag1.html

Telephone Set >> T Words
Telephone Set, definition of term: Telephone Set
telephone+set_pag1.html

Telephone Opera >> T Words
Telephone Opera, definition of term: Telephone Opera
telephone+opera_pag1.html

Telephone Line >> T Words
Telephone Line, definition of term: Telephone Line
telephone+line_pag1.html

Telephone Direc >> T Words
Telephone Direc, definition of term: Telephone Direc
telephone+direc_pag1.html

Telephone Excha >> T Words
Telephone Excha, definition of term: Telephone Excha
telephone+excha_pag1.html

Telephone Book >> T Words
Telephone Book, definition of term: Telephone Book
telephone+book_pag1.html

File Extension >> F Words
File Extension, definition of term: File Extension
file+extension_pag1.html