ἄρπιξ
From LSJ
Έγ', ὦ ταλαίπωρ', αὐτὸς ὧν χρείᾳ πάρει. Τὰ πολλὰ γάρ τοι ῥήματ' ἢ τέρψαντά τι, ἢ δυσχεράναντ', ἢ κατοικτίσαντά πως, παρέσχε φωνὴν τοῖς ἀφωνήτοις τινά –> Wretched brother, tell him what you need. A multitude of words can be pleasurable, burdensome, or they can arouse pity somehow — they give a kind of voice to the voiceless.
Spanish (DGE)
ἡ chipr. cierta zarza Hsch.
Frisk Etymological English
Grammatical information: f.?
Meaning: εἷδος ἀκάνθης H.
Other forms: Also ἄπριξ; and ἄπριγδα· εἶδος ἀκανθης Cypr. EM 132, 53.
Origin: PG [a word of Pre-Greek origin]
Etymology: Unknown. The variation with -γδα and this form itself suggests a substr. word.