You can use the noun shillelagh to talk about a wooden stick that's used as a weapon, especially if you're in Ireland.
This hardwood cudgel is named after the forest in County Wicklow which has produced many prime specimens of it. The shillelagh is beloved to the Irish and devotees of their patron saint the world over. You don't have to be Irish to wield one, but it helps. The trickiest thing about shillelagh is pronouncing it so that it sounds a bit like ukulele: shill-lay-lee.