Definition of rum-tum in English:

rum-tum

exclamation

  • Used to represent a regular rhythmic musical sound.

noun

  • 1A regular rhythmic musical sound.

  • 2Rowing. A clinker-built racing-boat for one or more scullers, with outriggers and sliding seat, used on the lower Thames. Occasionally attributive.

Origin

Early 19th century. Imitative of the sound of a drum roll. The semantic motivation of sense B. 3 is unclear; it may perhaps show a different word.

Pronunciation

rum-tum

/ˈrʌmtʌm/