Strong's:ἄψινθος wormwood (as a type of bitterness, i.e. (figuratively) calamity)Derivation: of uncertain derivation;KJV Usage: wormwood.
TBESG:ἄψινθοςwormwoodG:N-F / N:N--T ἄψινθος, -ου, ἡ (also ἀψίνθιον, τό; ἀψινθία, ἡ), wormwood: as a proper name, Rev.8:11.† (AS)
ἄψινθος apsinthos ap'-sin-thos Of uncertain derivation; wormwood (as a type of bitterness, that is, [figuratively] calamity)KJV Usage: wormwood.