Moon of Mars (6)
'moon of mars' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for phobos that I've seen before include "Satellite of Mars" , "another world" , "Planetary moon" , "Moon of Mars" , "heavenly body" .)
'moon of mars' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for deimos that I've seen before include "Moon of Mars" , "Satellite" .)