Liddell-Scott-Jones

πτήσσω (ptēssō) to alarm ^G:V

πτήσσω

(never πτήττω), [Refs 5th c.BC+]: future πτήξω [Refs 1st c.BC+]: aorist ἔπτηξα [Refs 5th c.BC+], Doric dialect ἔπταξα [Refs 5th c.BC+], Epic dialect πτῆξα [Refs 8th c.BC+]aorist 2 ἔπτᾰκον in compound καταπτακών [Refs 4th c.BC+]; Epic dialect 3rd.pers. dual καταπτήτην [Refs 8th c.BC+]: perfect ἔπτηχα [Refs 5th c.BC+]; later ἔπτηκα (κατ-) [Refs 4th c.AD+]; Epic dialect participle πεπτηώς, ῶτος (see.below[Refs]

__I Causal, scare, alarm, πτῆξε θυμὸν ἐνὶ στήθεσσιν Ἀχαιῶν [Refs 8th c.BC+]
__II intransitive, crouch or cower for fear, of animals, ἅπερ πτηνῶν ἀγέλαι τάχ᾽ ἂν σιγῇ πτήξειαν ἄφωνοι [Refs 5th c.BC+]; of human beings, ἔπταξαν ἀκίνητοι σιωπᾷ [Refs 5th c.BC+]; ὑπὸ φόβῳ π. [Refs 5th c.BC+]; κακῶς πάσχων π. [Refs 5th c.BC+]; ἐκποδὼν π. [Refs 5th c.BC+]; πόλις πρὸς πόλιν π. [Refs 5th c.BC+]
__II.2 crouch, of men in ambush, νῷν εἰς ἐρημίαν ὁδοῦ [Refs 8th c.BC+]
__II.3 with accusative of things, crouch for fear of.. , ἀπειλάς [Refs 5th c.BC+]