shillalah n a cudgel made of hardwood (usually oak or blackthorn) Usage(s) When they saw the Blue Shirts coming they flung their rocks, howling ''Up de Valera!", "O'Duffy is a traitor!", then ducked in for the shillalah work. Soon he had been presented with a shillalah. They gave their puddy-hatted guest a shillalah. Synonym(s) shillelagh