1) An ornamental cloth used to cover the back of a seat, especially a throne or chair of state, or a chair in the chancel of a church.
1342 Item lego unum doser decem ulnarum ad ponendum circa altare in choro, Yarm
1389 a couerlyd ... a docer & a new bancqwer & ij Cochyns, York
1408 ‘a coloured back-cloth [doser stenyd]’, York
1432 a rede docer with a banquere and all the whisshyns, Scarborough
1462 a bolster, a cod, a coverlet, a dosser, Walne.