Definition of cap and bells in US English:

cap and bells

plural noun

historical
  • The insignia of the professional jester.

    • ‘The loose connection to Dors is strangely apposite, however, for Marr was as showbiz as a political editor could be without wearing a jester's cap and bells.’
    • ‘Alexander Downer, still waving his cap and bells, pointed out gravely that all 43 were retired.’
    • ‘He had on a tight-fitting parti-striped dress, and his head was surmounted by the conical cap and bells.’
    • ‘The reason the period has become a joke must have something to do with those rather unfortunate clothes - jester's cap and bells, lace gowns, armour, monk's habits.’

Pronunciation

cap and bells

/ˌkap (ə)n ˈbelz/