Trot or gallop (4)
I believe the answer is:
gait
I believe this is a double definition.
'trot' is the first definition.
(I've seen this in another clue)
'gallop' is the second definition.
(thesaurus)
(Other definitions for gait that I've seen before include "Bearing" , "Style of movement" , "Method of moving" , "Carriage" , "walkway?" .)