a. Obs. rare. [f. thor-us (cf. Thoral, thorāle, culcitra in Du Cange), med. spelling of L. torus couch, marriage + -AL.] Of or pertaining to the marriage-bed.
1696. Phillips (ed. 5), Thoral Line, otherwise calld in Palmistry the Mensal Line, or the Line of Venus.
1726. Ayliffe, Parergon, 48. The second Punishment is a Thoral Separation or a Dissolution of Matrimony.