Kettledrum /(-drŭm`)/

Ket·tle·drum

Kettledrum

n.
  1. A drum made of thin copper in the form of a hemispherical kettle, with parchment stretched over the mouth of it. (Mus.)
  2. An informal social party at which a light collation is offered, held in the afternoon or early evening. Cf. Drum, n., 4 & 5.