† swap thak Sc. Obs.
[f. swap v. in the Sc. sense of ‘to gird’ + thack n.]
‘Thin boards of wood firmly fastened over a thatched roof, as a girding for the thatch’ (Jam.).
| 1496 Acc. Ld. High Treas. Scot. I. 310 Item, to the sawaris, for swap thak sawing to the samyn hous,..xxx s. |