My unabridged Liddell/Scott does not have any indication of what the name of the Greek Mount "Kyllene" means. Robert Graves in "The Greek Myths" says it means "Twisted Queen." I have seen where he can be off in his interpretation of names, plus that just sounds like an odd name for the mountain. Does someone have a reliable source for the meaning of "Kyllene"?
OK Pausanias (Paus. 8.17.1) gives it to:
After the grave of Aepytus you come to the highest mountain in Arcadia, Cyllene, on the top of which is a dilapidated temple of Cyllenian Hermes. It is clear that Cyllen, the son of Elatus, gave the mountain its name and the god his surname. ( δῆλα δέ ἐστιν ἀπὸ Κυλλῆνος τοῦ Ἐλάτου τῷ τε ὄρει τὸ ὄνομα καὶ ἡ ἐπίκλησις γεγενημένη τῷ θεῷ.)
I know little about this gentleman (Κυλλήν, the above being apparently his only claim to fame), but Beekes gives
κυλλός [adj.] 'deformed, crippled, crooked', of hands, feet, etc. (lA). ... .ETYM Probably connected with κελλόν: στρεβλόν, πλάγιον 'twisted, athwart' (H.)... In view of its semantics and problematic lE etymology, the word may as well be Pre-Greek (cf. Fur.: 35455).
Further see WP.
Α Pre-Greek placename is plausible, given their plethora in the area, but if you have seen the crooked mountain, you cannot escape the evident inference. (Where Graves' queen came from one should not have a clue.)