Habitual practice (6)
'habitual practice' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for usage that I've seen before include "Convention" , "Habit" , "Interest of old" , "Treatment, practice" , "Way of employing" .)
'habitual practice' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for custom that I've seen before include "Way of doing things" , "Habitual action" , "Habitual use" , "Traditional usage" , "Accepted or habitual practice" .)