κοιλασία
From LSJ
ὤδινεν ὄρος, Ζεὺς δ' ἐφοβεῖτο, τὸ δ' ἔτεκεν μῦν → the mountain was in labor — even Zeus was afraid — but gave birth to a mouse
English (LSJ)
ἡ, in pl.,
A indentations in beams, Hero Bel.104.2.
German (Pape)
[Seite 1466] ἡ, die Höhlung, Hesych.
Greek (Liddell-Scott)
κοιλασία: ἡ, κοίλωμα, κοιλότης, Ἥρων Βελοπ. 137. 13, Ἡσύχ.