CATEGORY: feature DEFINITION: A small auxiliary chamber in a wall, usu. Found in mit structures and often adjoining the east wall of the main chamber. They are much larger than apertures and niches.
SYNONYMS OR RELATED TERMS: casting jet, casting seam CATEGORY: artifact DEFINITION: A thin irregular ridge of metal on the outer face of a casting, resulting from seepage of the molten metal into the joint between the separate components of the mould used in its manufacture. A casting jet is similar but is a small plug of metal that originally filled the gate or aperture used to fill the mould. During the final cleaning and finishing of a cast object the jet and flash are usually knocked off and filed smooth.
CATEGORY: artifact; geology DEFINITION: A plug of metal which is knocked out after an artifact is cast and which fits exactly into the opening (aperture or gate) of a mold. When casting metal into a bivalve or composite mold, the aperture through which the metal is poured into the mold becomes filled up with molten metal, and this plug of metal cools and hardens with the object. When the finished artifact is removed from the mold, the castingjet is still attached; in most cases it is knocked off and the scar polished down the metal plug being melted down for re-use. In some cases, however, it may be left on, particularly on neck rings and bracelets. Examples are sometimes in founder's hoards.
CATEGORY: artifact DEFINITION: A Greek vessel of earthenware, metal, or stone, and sometimes in the form of an animal head. It was a deep vessel with a single handle intended for the pouring of libations or liquid offerings to gods, spirits of the dead, etc. The mouth at the upper end is often balanced by a hole at the lower end. It is presumed that the covering of this aperture by the celebrant would control the pouring of the libation until the right moment in the ceremony. Rhytons were often made of precious materials and of elaborate form. They are typical of the Minoans, Mycenaeans, and classical Greeks, and of the Achaemenid Persians. It is technically a ritual vessel, found from the Bronze Age onward.