1. Christmas; also, a shout of joy at Christmas for the birth of the Savior.
  2. A kind of hymn, or canticle, of mediaeval origin, sung in honor of the Nativity of our Lord; a Christmas carol.
  3. The core, or the inner part, of a mold for casting a large hollow object.
  4. The bottom part of a mold or of a flask, in distinction from the cope; the drag.