Before serving the beer a spile is hammered into the shive and a tap into the keystone.
From the en.wikipedia.org
Spare the rod and spile the child, as the Good Book says.
From the sacbee.com
If all is well, hammer in a spile, hook on your bucket through the little hole you will have made in the rim and cover it.
From the guardian.co.uk
Using a peg called a spile, they pierce the bark, attach the tubing, and a central vacuum pump ensures a smooth, steady flow of sap.
From the post-gazette.com
As a student everyone seemed to buy a cask for a party, know how to settle it, replace the hard spile with the soft and tap it.
From the guardian.co.uk
A cask has a tap hole near the edge of the top, and a spile hole on the side used for conditioning the unfiltered and unpasteurised beer.
From the en.wikipedia.org
Some items are syrup-related, such as finding an old spile, the spigot used to tap maple trees, while others are more random, like an annual report from a New Hampshire town meeting.
From the bostonherald.com
More examples
Pile: a column of wood or steel or concrete that is driven into the ground to provide support for a structure
Bung: a plug used to close a hole in a barrel or flask
A spile is a small wooden peg used to control the flow of air into, and carbon dioxide out of, a cask of ale.
A splinter; A spigot or plug used to stop the hole in a barrel or cask; A spout inserted in a maple (or other tree) to draw off sap; To plug (a hole) with a spile; To draw off (a liquid) using a spile; To provide (a barrel, tree etc.) with a spile
(SPILING) A method of fitting longitudinal planking junctions.
(spiling) Marking on a bar of wood the distances that a curved line, say that of a frame, is from a straight line.
A plank driven ahead of a tunnel face for roof support.