sprue

A tropical disease causing a sore throat and tongue, and disturbed digestion; psilosis.

A channel through which molten metal is poured into the mold during the casting process.

Material that cools in the feed channels to a mold.

To remove the sprues (material left in feed channels) from a cast piece.

In the brass spruing room is what is known as a Todd water tumbler, used for brass castings.

The method adopted for sprueing the wax pattern is much more important to the success of the inlay than is generally realized.