v. [UNDER-1 4 a.] trans. To tie beneath. Also spec. (see quot. 1894).
1552. Huloet, Vndertye, subtigo.
1648. Hexham, II. Onderbinden, to Vndertye.
1894. Outing, XXIV. 258/2. The wings are under-tied, as are all our home-made flies; that is, the wings cover the point of the hook.