Definition of "cass"

cass¹

verb
third-person singular simple present casses, present participle cassing, simple past and past participle cassed
1. (obsolete, transitive) To render moot or void; to annul; to reject
  Quotations
  […] Do therefore, with Advice and Consent aforesaid, Cass, Annul and Discharge all Oaths whatsoever, by which any of Our Subjects are incapacitated or disabled from holding Places, or Offices in Our said Kingdom […]
  1687 James II/VII of England, Scotland, France, and Ireland Declaration of Indulgence

cass²

noun
1. (computing, dated) Abbreviation of cassette.
  Quotations
  STOCK CONTROL / CASS / DATASOFT / 12.81
  1985, Stephen Doyle, GCSE Computer Studies for You, page 214
  Radio Shaft color computer w/printer & cass. drive, several programs, $250.
  1988, PC Mag, volume 7, number 7, page 62