Strong's Concordance kleis: a key Original Word: κλεῖς, κλειδός, ἡPart of Speech: Noun, Feminine Transliteration: kleis Phonetic Spelling: (klice) Short Definition: a key Definition: a key. Thayer's Greek Lexicon STRONGS NT 2807: κλείςκλείς, κλειδός, accusative κλεῖδα and κλεῖν ( Luke 11:52; Revelation 3:7), accusative plural κλεῖδας and κλείς ( Matthew 16:19; Revelation 1:18; cf. Kühner, § 130, i., p. 357; Winers Grammar, 65 (63), cf. Buttmann, 24 (22); ( WH's Appendix, p. 157)), ἡ (from Homer down); a key. Since the keeper of the keys has the power to open and to shut, the word κλείς is figuratively used in the N. T. to denote power and authority of various kinds (cf. B. D., under the word |