γηγγήλιξ
From LSJ
ἵνα οὖν μηδ' ἐν τούτῳ δῷ αὐτοῖς λαβήν (Photius, Fragments on the Epistle to the Romans 483.26) → so that he doesn't give them even here a handle (= an opportunity for refutation)
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