κλείς

• κλαΐς (klaḯs) — Doric
• κλᾶϊς (klâïs) — Aeolic
• κληΐς (klēḯs) — Ionic
• κλῄς (klḗis) — Attic

From Proto-Hellenic *klāwī́ds, from Proto-Indo-European *kleh₂u- (“nail, pin, hook - instruments, of old use for locking doors”). Cognate with Latin clāvus (“nail, pin”), Old Church Slavonic ключь (ključĭ, “key”).^[1]

κλείς • (kleís) f (genitive κλειδός); third declension

1. bar, bolt
   1. a catch or hook passed through the door from the outside to catch the strap attached to the bar
   2. key
   3. (figurative) a means to something; key
2. hook or tongue of a clasp
   1. stopcock
3. (anatomy) collarbone (probably so called from its hook shape)
4. (in the plural) rowing bench of a ship
5. narrow strait, promontory or pass
6. (in the plural) sacred chaplets
7. (poetry) clausula, cadence

• “κλείς”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
• “κλείς”, in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• κλείς in Bailly, Anatole (1935) Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
• Bauer, Walter et al. (2001) A Greek–English Lexicon of the New Testament and Other Early Christian Literature, Third edition, Chicago: University of Chicago Press
• G2807 in Strong, James (1979) Strong’s Exhaustive Concordance to the Bible
• Woodhouse, S. C. (1910) English–Greek Dictionary: A Vocabulary of the Attic Language‎, London: Routledge & Kegan Paul Limited.
  • collar-bone idem, page 143.