ζεῦγμα

A. that which is used for joining, band, bond, τὸ ζ. τοῦ λιμένος the barrier of ships moored across the mouth of the harbour, Th. 7.69, cf. 70, D.S. 13.14:—written ζεογμα, Rev.Phil. 50.70 (Didyma, ii B.C.).

2. bridge of boats, AP 9.147 (Antag.); τὰ ζ. τῶν ποταμῶν D.H. 9.31, cf. Plu. 2.174e, etc.; pier or platform formed by lashing several vessels together, Plb. 3.46.2, Plu. Marc. 14, 15.

3. canal-lock, PPetr. 2p.123, 3p.210 (iii B.C.): metaph., ζεύγματ’ ἀνάγκης the bonds of necessity, E. IA 443.

II. Gramm., zeugma, a figure of speech, wherein two subjects are used jointly with the same predicate, which strictly belongs only to one, Alex. Fig. 2.17.