dial. [A dial. form of fetch = VETCH: cf. thane2, and see TH (6).]
1733. W. Ellis, Chiltern & Vale Farm., 50. Waggon Loads of Peas, Thetches, Chaff and other Grain.
1759. in Q. Jrnl. Economics, Nov. (1907), 77. To be sowed Wheat as soon as the thetches are tyed off.
1893. Wilts. Gloss., Thetches, Thatches, vetches. Lent thetches are an early spring kind.
