ὑακίνθινος, -η, -ον (ὑάκινθος), [in LXX for תַּחַשׁ, תְּכֵלֶת ;] of hyacinth, hyacinthine (see: ὑάκινθος), "doubtless meant to describe the blue smoke of a sulphurous flame" (Swete): Rev.9:17 (Hom., Eur., al.).† (AS)
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G5191 — ὑακίνθινος
huakinthinos · dark blue · Greek