'Double first' definitions:
Definition of 'double first'
From: WordNet
noun
A first-class honours degree in two subjects
Definition of 'Double first'
From: GCIDE
- Double first \Dou"ble first`\ (Eng. Universities) (a) A degree of the first class both in classics and mathematics. (b) One who gains at examinations the highest honor both in the classics and the mathematics. --Beaconsfield. [1913 Webster]