LSJ
(Hdn. Gr. 1.17, Choerob. in Theod. 2.267 H.), later Τελχίν (Choerob. l.c., Sch. rec. A. Pers. 353), ῖνος, ὁ, one of the Telchines, described as inhabitants of Crete (hence called Τελχινία, St.Byz.), Rhodes (Τελχινίς, Str. 14.2.7), Sicyon (St.Byz. s.v.), Ceos (Call. Fr. 9.65 P.), or Cyprus (Paus. 9.19.1), and the first workers in metal; but of ill report as spiteful sorcerers (Τ. γόητες Call. l.c.), D.S. 5.55, Str. 10.3.19, 14.2.7; — Τελχίνιος [ιν], α, ον, epith. of Apollo, Hera, and the Nymphs, D.S. l.c. ; of Athena at Teumessus, Paus. l.c. ; — Τελχίνια [ιν], τά, a festival at Delphi, Schwyzer 323 D 9 (iv BC). later, as Appellat. τελχίν, a spiteful person, backbiter, Call. Aet. Oxy. 2079.1 (pl., glossed by βάσκανοι)· τελχίν τις ἢ δαίμων Sch. rec. A. l.c. ; as Adj., τελχῖνες σῆτες βίβλων, of Grammarians, AP 11.321 (Phil.); as fem., τ. δεξιά Lib. Or. 60.9. τελχῖνες, αἱ, = αἱ ὑπὸ πληγῆς εἰς θάνατον καταφοραί, Hdn. Gr. 1.17. (Connected with θέλγειν by ancient Gramm., cf. Ael. Dion. Fr. 436, Hsch. s.v. Θελγῖνες ; Τ. was a king of Sicyon acc. to Paus. 2.5.6.)
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)