__ code (5)
'code' is the definition.
(Morse code)
This is the entire clue.
(Other definitions for morse that I've seen before include "One who enjoyed solving code" , "used to transmit messages" , "Endeavour" , "Kind of code" , "Oxford detective" .)
'code' is the definition.
(synonyms)
This is all the clue.
(Other definitions for cipher that I've seen before include "Key to a code" , "Nonentity" , "A message written in code" , "Symbol representing nought, thing of no importance" , "Code - 0" .)
'code' is the definition.
(area code is a kind of code)
This is all the clue.
(Other definitions for area that I've seen before include "Geographical region" , "environs" , "Extent of a 2-dimensional surface" , "land" , "Speaking formally to (someone)" .)
'code' is the definition.
(zip code is a kind of code)
This is the entire clue.
(Other definitions for zip that I've seen before include "tear" , "Nothing < close up" , "drive" , "Locking device with two toothed edges and a sliding tab" , "Energy (informal); a US code" .)