Green’s Dictionary of Slang

1. to defecate.

a.1575		‘Old Simon the Kinge’ in Farmer Merry Songs and Ballads (1897) III 1: Mine ostes was sicke of the mumpes, / her mayd was ffisle at ease.
1661		‘The Display of the Headpiece & Codpiece in Valour’ in Rump Poems and Songs II (1662) 92: Had the Rump but once fizl’d, ’twas the strongest side.
1696		Motteux (trans.) Gargantua and Pantagruel (1927) II Bk V 554: The devil of anything we do, but fizzling, farting, funking, squattering [...] and doing nothing.
1709		N. Ward Compleat and Humorous Account of Remarkable Clubs (1756) 241: At Stool I’d fizzle out a thousand Things, / And with Quack’s Bills, then mundify my Breech.

2. (also fisle) to break wind.

1549		T. Chaloner (trans.) Erasmus Praise of Folie (1509) 71: [T]heir filthinesse semeth more than clennesse vnto theim, that stenche, and fyslyng, smelleth ambre grise.
1653		Urquhart (trans.) Gargantua and Pantagruel (1927) I Bk II 331: The false old trot did so fizzle and foist, that she stunk like a hundred devils.
c.1660		‘Panche’ in Furnivall & Hales Bishop Percy’s Folio Manuscript of Loose and Humorous Songs (1868) 65: The woman was windye, & fisled againe.
1664		C. Cotton Virgil Travestie (1765) Bk I 18: I’ll teach him fizzel in my Piss-pot.
1739		R. Bull Grobianus 268: Proceed, ye venerable Train! proceed, To fart and fizzle in the Time of Need; Those who retain stale Wind are nasty Sluts.