Arch. Also 7–8 anglicized as trochile. [L., app. the same word as prec.: cf. Gr. τροχιλία the sheaf of a pulley.] A concave molding; = SCOTIA, CASEMENT 1: esp. in classical architecture.
1563. Shute, Archit., D iij. The nethermost Trochilus or Scotia.
1664. Evelyn, trans. Freart’s Archit., 125. Trochile is that cavity appearing next to the Torus.
1789. P. Smyth, trans. Aldrich’s Archit. (1818), 117. At Tivoli, the ends of the channels and the cavity of the trochile or casement are not round but square.
1842–76. Gwilt, Archit., Gloss., Trochilus,… an annular moulding whose section is concave like the edge of a pulley … more commonly called a scotia.
1845. Parker, Gloss. Archit., 330. Scotia, or Trochilus, a hollow moulding constantly used in the bases of columns, &c., in classical architecture.
