γηγγήλιξ
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)
(quizá l. γιγγίλιξ) ratón de campo Hsch., cf. γήλιγρος.
Frisk Etymological English
γήλιγρος
Grammatical information: ?
Meaning: ὁ ἄγριος μῦς H.
Origin: PG [a word of Pre-Greek origin]X [probably]
Etymology: The form should not be altered (to γιγγιλ-). A Pre-Greek suffix -ρ(ο)- is well known. γηγγ- shows reduplication (and prenasalization?; cf. γίγγλυμος, γάγγαμος). It is no doubt a Pre-Greek word