Orkney and Shetland. [ad. (after Sc. twelt TWELFTH a.) ON. tylftar-eiðr, f. tylft a body of twelve, a dozen + eiðr oath: cf. SAXTER AITHE.] An oath of twelve compurgators.
1603. Lawting Court, 21 July, in Peterkin, Notes Orkney & Zetl. (1822), App. 35. Ordained to quit himsel of theft by the twelter-aith, because the stowth is great.
