Bring under control
'bring under control' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for harness that I've seen before include "Control and exploit" , "Horse's reins, etc" , "Couple" , "Set of straps for horse or child" , "Leather straps on a draft animal" .)
'bring under control' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tame that I've seen before include "Domesticated - dull" , "Submissive -- pedestrian" , "Domesticated, not wild" , "'Domesticated, docile (4)'" , "Not exciting; domesticate" .)