Definition of "zounds"

'Zounds, a dog, a rat, a mouse, a cat, to scratch a man to death!

c. 1591–1595 (date written), William Shakespeare, “The Tragedie of Romeo and Ivliet”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, (please specify the act number in uppercase Roman numerals, and the scene number in lowercase Roman numerals)

Bounds, mounds, lounds, founds, kounds, downds, rounds, pounds, zounds! — hounds — ha! hounds — I have it.

1870, R.M. Ballantyne, The Floating Light of the Goodwin Sands

"Zounds!" he exclaimed. "What the dickens is that?"

1900, J.C. Hutcheson, Bob Strong's Holidays