Word made from the letters of another (7)
I believe the answer is:
anagram
'word made from the letters of another' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for anagram that I've seen before include "pouring the tea?" , "Jumbling of letters" , "Jumble of letters" , "Scramble of letters (to make trestle, perhaps)" , "Word arranged from the letters of another" .)