E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A roisterer, a rake. The continuation of Stows Annals tells us that the blades of London used to assemble in West Smithfield with sword and buckler, in the reign of Queen Elizabeth, on high days and holidays, for mock fights called bragging fights. They swashed and swinged their bucklers with much show of fury, but seldome was any man hurt. (See SWASHBUCKLER.)
There was I, and little John Doit of Staffordshire, and black George Barnes, and Francis Pickbone, and Will Squele a Cotswold man; you had not four such swinge-bucklers in all the Inns-of-court; and, I may say to you, we knew where the bona-robas were.Shakespeare: 2 Henry IV., iii. 2.