The Thracian word argilos
Word argilos
Meaning mouse
See also Homeric Greek: ἀγρός ‘field’
Homeric Greek: γαλέη ‘weasel’
Proto-Indo-European: *hₐeĝros ‘pasture, field’
Ancient Macedonian: ἄργος ‘field, plain, valley’
Attic Greek: γαλῆ ‘weasel, marten, polecat’
Albanian: arë ‘field’

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Stephanos of Byzantium ‘ύπό Θρακών ό μύς άργιλος καλείται

Witczak convincingly proposes that the word means ‘field mouse’, from ἄρ- (‘field’) and -γιλος (‘mouse’).

OInd. giri- (f.) and girikā- (f.) ‘mouse’, Ormuri gilak ‘rat’, Bakhtiari girza ‘rat’, NPers. dial. (Alamut) gerzū ‘mouse’.