E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A conquette. The word is from the verb flirt, as, to flirt a fan. The fan being used for coquetting, those who coquetted were called fan-flirts. Lady Frances Shirley, the favourite of Lord Chesterfield, introduced the word. Flirt is allied to flutter, flit, jerk, etc.