πταίρω

A. v.l. πτέρεται, v. πτέρομαι), also πτείρω, Hdn. Gr.1.191 codd. (pres. in use in early writers πτάρνυμαι, Hp. Morb. 2.54, X. An. 3.2.9, Philem. 100.4, Arist. Pr. 962b8 (also πτάρνεται Gloss.), impf. ἐπταρνύμην Diog. Ep. 35.3): aor. 2 ἔπταρον Od. 17.541, etc.: rarely aor. 1, part. πτάραντες Arist. Pr. 963a33 (s.v.l.):—Pass., v. sub fin.:—sneeze, μέγ’ ἔπταρεν he sneezed aloud, Od. l.c. (taken for a good omen, cf. Ar. Ra. 647, etc.); but also as a bad omen, λυπούμεθ’ ἂν πτάρῃ τις Men. 534.9; ἔπταρον εἰς ἀνέμους AP 11.375 (Maced.); οὐδὲ λέγει "Ζεῦ σῶσον", ἐὰν πτάρῃ ib.268; ἀναλαβὼν τοιοῦτόν τι, οἵῳ κνήσαις ἂν τὴν ῥῖνα, πτάρε Pl. Smp. 185e: metaph. of a lamp, sputter, AP 6.333 (Marc. Arg.):—also in aor. Pass., part. πταρείς Hp. Epid. 5.14, Arist. Pr. 887b35.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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