Word meaning the same as another (7)
I believe the answer is:
synonym
'word meaning the same as another' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for synonym that I've seen before include "Quick crossword clue" , "Word that can be exchanged for another" , "Word that can replace another in context" , "A word that can be interchanged with another" , "Word with meaning similar to that of another" .)