Lexical Definition

‎πτύω‎ ptýō (ptoo'-o) to spit ^G:V
a primary verb (compare ‎πτύσσω‎)

spit.

• to spit

Abbott-Smith

πτύω, [in LXX: Nu 12:14 (ירק), Si 28:12*;]
to spit: Mk 7:33 8:23, Jo 9:6 (cf. ἐκ-, ἐμ-πτύω).†

Abbott-Smith References

Liddell-Scott-Jones

πτύω,

[Refs 8th c.BC+]future πτύσω [ῠ] [Refs 5th c.BC+]; πτύσομαι [Refs]aorist ἔπτῠσα[Refs 5th c.BC+]: perfect ἔπτῠκα [Refs 2nd c.AD+] —passive, future πτυσθήσομαι (ἀνα-) [NT]: aorist ἐπτύσθην [Refs 5th c.BC+]: aorist 2 participle πτυέντα [Refs]. [ῡ in present and imperfect; later Epic dialect have ῠ in imperfect before a short syllable, [Refs 4th c.AD+], but mostly in compounds, (ἀνα-) [Refs 3rd c.BC+]; ῠ always in aorist): —spit out or up, αἷμα Il.[same place], [Refs 5th c.BC+]: absolutely, spit, [Refs 5th c.BC+] spat in his face, [Refs 5th c.BC+]

__2 of the sea, disgorge, cast out, με.. τηλόσ᾽ ἀπὸ.. ἠϊόνος [Refs 3rd c.BC+]with a splash, [Refs 1st c.AD+]
__2.b of fish, spawn, [Refs 2nd c.AD+]
__2.c proverbial, πρὶν πτύσαι 'before you can say Jack Robinson', [Refs 4th c.BC+]
__3 metaphorically, πτύσας with loathing, [Refs 5th c.BC+]
__4 εἰς κόλπον π., to avert a bad omen, disarm magic, etc., which was done three times, ὡς μὴ βασκανθῶ δὲ τρὶς εἰς ἐμὸν ἔπτυσα κόλπον [Refs 4th c.BC+]; ὑπὸ κόλπον π. [Refs 2nd c.AD+]
__II promote the flow of spittle, of certain wines, in passive, [Refs 5th c.BC+]. (Cf. Gothic speiwan 'spit', Latin spuo, etc.)

_{LSJ Scripture Refs: Luke.18.32}