spile /spaɪl/noun 4verb 6forms 3 noun4 •A spigot or plug used to stop the hole in a barrel or cask. •(US) A spout inserted in a maple (or other tree) to draw off sap. •A pile; a post or girder.The bottom of the river is of hard, sparkling white sand, into which spiles are easily driven; and the building and keeping up of such a wharf is a trifling trouble... — 1873 •(dialect, no longer used) A splinter. verb6 •To plug (a hole) with a spile. •To provide (a barrel, tree etc.) with a spile. •To draw off (a liquid) using a spile. •To support by means of spiles. •To drive piles into. •(dialect, US) spoil. formsspiled · spiling · spiles