Sc. [? attrib. use of THIRL sb.2 1.] Bound in thirlage to.
1582. Calr. Laing Charters (1899), 258. Ouir mile that we ar thyrll to.
1897. Sarah Tytler, Witch-wife, vi. 82. Malt and meal from the mill to which he was ‘bound thirl.’
