Definition of rumbullion in English:

rumbullion

noun

historical
  • Rum; a glass or drink of this.

noun

rare, historical
  • A variety of gooseberry with yellow or green skin, used chiefly for bottling.

Origin

Mid 17th century. Origin uncertain. Although the word is evidently related to its slightly later synonyms rum and rumbustion, the precise nature of the relationship in unclear<br>late 17th century (in an earlier sense). Alteration of Rambouillet.