sprue

Short definition from Wiktionary

Noun

1. 1
   A tropical disease causing a sore throat and tongue, and disturbed digestion; psilosis.
2. 2
   A channel through which molten metal is poured into the mold during the casting process.
3. 3
   Material that cools in the feed channels to a mold.

Verb

1. 1
   To remove the sprues (material left in feed channels) from a cast piece.