1) A coarse material or woollen bed-cover.
1579 vj cotton blankets, viijs, ij fledg blankets, vs, ij caddow blankets, ijs iiijd, Kendal
1631 five coverlitts and two caddowes, Pudsey
1674 Jonathan Drake sayeth that ... his wife ... told him that one Robert Rawnsley ... tooke a caddow from her, Bradford
1758-62 the proper way to make weft for making of rugs bye some called cadows, Wakefield. Wright has ‘cadow’ as a rug or mantle.