'Threepenny' definitions:

Definition of 'threepenny'

From: WordNet
adjective
Used of nail size; 1 1/8 in long
adjective
Of trifling worth [syn: sixpenny, threepenny, twopenny, tuppeny, two-a-penny, twopenny-halfpenny]

Definition of 'Threepenny'

From: GCIDE
  • Threepenny \Three"pen*ny\, a. Costing or worth three pence; hence, worth but little; poor; mean. [1913 Webster]