Source : Webster's Revised Unabridged Dictionary (1913)

Sillabub \Sil"la*bub\, n. [Cf. sile to strain, and bub liquor,
   also Prov. E. sillibauk.]
   A dish made by mixing wine or cider with milk, and thus
   forming a soft curd; also, sweetened cream, flavored with
   wine and beaten to a stiff froth. [Written also {syllabub}.]

Source : WordNet®

sillabub
     n 1: spiced hot milk with rum or wine [syn: {syllabub}]
     2: sweetened cream beaten with wine or liquor [syn: {syllabub}]