shrinking
Shrink"ing, a. & n. Defn: from Shrink. Shrinking head (Founding), a body of molten metal connected with a mold for the purpose of supplying metal to compensate for the shrinkage of the casting; -- called also sinking head, and riser.
Shrink"ing, a. & n. Defn: from Shrink. Shrinking head (Founding), a body of molten metal connected with a mold for the purpose of supplying metal to compensate for the shrinkage of the casting; -- called also sinking head, and riser.