συνίζω

A. sit together, hold a sitting (for the discharge of business), of a court of magistrates, Hdt. 6.58.

2. fall together, collapse, Hp. Oct. 11, Arist. Pr. 868a18, 927b34, Resp. 479b14, Thphr. Sud. 25; so εἰς ταὐτὸν ς. Pl. Ti. 72d; τὸν ἄργυρον συνιζῆσαι τακέντα Plu. 2.665b; τὸ συνιζηκὸς τῶν πόρων Gal. 10.472.

II. causal, make to sink, τὸν πνεύμονα αἴρειν καὶ ς. Arist. Resp. 479a27, cf. 475a8.