πέτευρον

τό
A. roosting-perch for fowls, Ar. Fr. 839, Theoc. 13.13, Nic. Th. 197 (pl.), Hsch.
2. generally, pole, spar, plank, Lyc. 884.
II. springboard, used by tumblers and acrobats, Man. 6.444, Epic.in Arch.Pap. 7p.5; Lat.petaurus, Juv. 14.265, etc., but abl.peteuro (v.l. petauro), Lucil.Fr. 1298 Marx.
2. platform, stage, Plb. 8.4.8.
III. springe, trap, ἐπὶ πέτευρον ᾅδου συναντᾷ LXX Pr. 9.18.
IV. public notice-board, IG 7.235.42 (Oropus, iv B.C.); π. τῷ λόγῳ (for publication of accounts) ib.11(2).145.44 (Delos, iv B. C.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project