E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A conjurer or juggler. (From Old French, tresgiat = a juggling trick.) The performance of a conjurer was anciently termed his minstrelsy; thus we read of Janio the jugglerJanio le tregettor, facienti ministralsiam suam coram rege 20s. (Lib. Comput. Garderob, an. (4 Edw. II. fol. 86), MS. Cott. Nero, chap. viii.)