Definition of spile

• n. - A small plug or wooden pin, used to stop a vent, as in a cask.
• n. - A small tube or spout inserted in a tree for conducting sap, as from a sugar maple.
• n. - A large stake driven into the ground as a support for some superstructure; a pile.
• v. t. - To supply with a spile or a spigot; to make a small vent in, as a cask.