Definition of lum hat in English:

lum hat

noun

Scottish
informal
  • A top hat.

    • ‘I'll be there with my lum hat & silk lined cape!’
    • ‘Saltires were as ubiquitous as Millennium merchandise, a group of Colombians having secured a cartel in the ‘official novelty vending’ of silly felt lum hats, expertly tapping into the patriotic theme.’
    • ‘The sun glinted on the Governor's gold lace and my lum hat, and no doubt they thought we were heathen deities descended from the heavens.’