LSJ
τό, pulleyblock, pulley, IG4²(1).102.49 (Epid., iv BC); for the gen. pl. τροχιλιῶν (v.l. τροχίλων) in Pl. R. 397a, and τροχιλίων in Moschio ap. Ath. 5.208e, Hero Spir. 1.27 (v.l.), τροχιλείων shd. perh. be read.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)