It's a way to walk (4)
I believe the answer is:
gait
I believe this is a double definition.
'it's a way' is the first definition.
(I have seen 'Way of walking' mean 'gait' so perhaps 'way' could also mean 'gait')
'walk' is the second definition.
(I know that gait is a type of walk)
'to' is the link.
(Other definitions for gait that I've seen before include "Style of walking" , "Way of walking sounds like way of entry" , "Carriage" , "Bearing" , "Deportment" .)