waler /ˈweɪlə/ noun2 •(Australia, India) A breed of light saddle horse from Australia, once favoured as a warhorse.Some maintain that the Waler is extinct, its blood living on only in the modern Australian Stock Horse and some of the feral brumbies that roam the outback. — 2007 •A plank of wood, block of concrete, etc., used for support or to maintain required separation between components in order to help maintain the form of a construction under stress.Another consideration is when walers are placed between the piles (Figure 27) and to what extent the pile could deform before the load of the berthing vessel would be shared by the adjacent walers. — 1998 formsWalers · walers