E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Drac.
A sort of fairy in human form, whose abode is the caverns of rivers. Sometimes these dracs will float like golden cups along a stream to entice women and children bathing, and when they attempt to catch the prize drag them under water. (South of France mythology.)
1
Fare le drac, same as Faire le diable. Irish, Play the Puck; English, Play the deuce.