Memory method (4)
I believe the answer is:
rote
'memory method' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rote that I've seen before include "Repetition for learners" , "Learn by ____ (repetition)" , "Habitual routine" , "By . . . . - by memory without thinking" , "Repetition of something to be learned" .)