σπέος

• σπεῖος (speîos)

According to Beekes, the word is undoubtedly from Pre-Greek.

σπέος • (spéos) n (genitive σπείους); third declension

1. (Epic) cave, cavern, grotto
   • 800 BCE – 600 BCE, Homer, Odyssey 1.13–15:

     τὸν δ’ οἶον, νόστου κεχρημένον ἠδὲ γυναικός,
     νύμφη πότνι’ ἔρῡκε Καλυψώ, δῖα θεᾱ́ων,
     ἐν σπέσσι γλαφυροῖσι, λιλαιομένη πόσιν εἶναι.

     tòn d’ oîon, nóstou kekhrēménon ēdè gunaikós,
     númphē pótni’ érūke Kalupsṓ, dîa theā́ōn,
     en spéssi glaphuroîsi, lilaioménē pósin eînai.

     [Odysseus] alone, longing for homecoming and his wife,
     the revered nymph Calypso, brightest of goddesses, detained
     in hollow caves, longing for him to be her husband.

• “σπέος”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
• σπέος in Cunliffe, Richard J. (1924) A Lexicon of the Homeric Dialect: Expanded Edition, Norman: University of Oklahoma Press, published 1963
• Beekes, Robert S. P. (2010) Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, page 1381