1) A regional spelling of sack.
1522 for a sek of coylles iijd, York
1579 of Mr Robert Wytham for a secke of haver 3s 4d, Stockeld
1693 six sex and three pockes, Holmfirth. Early examples of the spelling are found in Yorkshire in by-names for a maker of sacks or sack-cloth: 1277 Eva la Seckere, Ossett.