ABSTRACT
Jack, first name, often implying low social status. 2H6, see Cade, Jack. diminutive of John: 1H4, John Oldcastle. MWW 2.2.134, John Falstaff. MWW 1.4.54, John Rugby. It has been argued that the meaning here is 'knave Rugby,' but Caius may just be showing wonderment at the English language. Later in the play there seems no insult intended by Caius against Rugby: 2.3.1, 3, 8, passim.
