Quick Definition
amethyst
Strong's Definition
the "amethyst" (supposed to prevent intoxication)
Derivation: from G1 (Α) (as a negative particle) and a derivative of G3184 (μεθύω);
KJV Usage: amethyst
Thayer's Greek Lexicon
ἀμέθυστος, , ἡ, amethyst, a precious stone of a violet and purple color (Exo_28:19; according to Phavorinus so called διά τό ἀπείργειν τῆς μέθης (so Plutarch, quaest. conviv. iii. 1, 3, 6)): Rev_21:20. (Cf. B. D. under the word.)
Mounce Concise Greek Dictionary
ἀμέθυστος amethustos 1x
an amethyst, a gem of a deep purple or violet color, so called from its supposed efficacy in keeping off drunkenness, Rev_21:20
Abbott-Smith Greek Lexicon
ἀμέθυστος , -ου , ἡ
( acc to Plut ., < ἀ - μεθύω , being regarded as an antidote against drunkenness),
[in LXX : Exo_28:19 ; Exo_36:19 ; Exo_39:12 Eze_28:13 * ;]
amethyst, a purple quartz: Rev_21:20 .†
Liddell-Scott — Intermediate Greek Lexicon
ἀμέθυστος [Etym: μεθύω] "not drunken", Plut. as Subst., ἀμέθυστος, ἡ, "amethyst", the precious stone, supposed to be "a remedy against drunkenness", NTest.
STEPBible — Tyndale Abridged Greek Lexicon
ἀμέθυστος, -ου, ἡ
(accusative to Plut., ἀ- μεθύω, being regarded as an antidote against drunkenness) [in LXX: Exo.28:19 36:19 39:12 Eze.28:13 * ;]
amethyst, a purple quartz: Rev.21:20.†
(AS)