1) The back premises of a dwelling; a garden or enclosure.
1556 everye man that haithe anye tennants of their baksyds do putt theym awaye, Wakefield
1567 Thomas Willance house and the shopps with the garthes of the baksydes, Richmond
1672 iron stolen out of his yard or backside of his house, Skipton
1693 having some occasion to goe into his backside saw two men in the next backside, Halifax
1746 two garths or closes on the backside, Driffield. The same word could refer to an area in a town or village away from the main street: 1586 ‘to a way on le Backeside of the same vill’, Broughton in Cleveland
1651 he apprehended two persons traveiling on the backe side of Malton . See HPN22.