Quick Definition
a festering sore
Strong's Definition
an ulcer (as if drawn together)
Derivation: probably from G1670 (ἑλκύω);
KJV Usage: sore
Thayer's Greek Lexicon
ἕλκος, ἑλκεος (ἕλκους) (cf. Latinulcus,ulcerare; perhaps akin to ἕλκω (Etym. Magn. 331, 3; 641, 3), yet cf. Curtius, § 23), τό;
1. a wound, especially a suppurated wound; so in Homer and earlier writings.
2. from (Thucydides), Theophrastus, Polybius on, a sore, an ulcer: Rev_16:2; plural, Luk_16:21; Rev_16:11. (for ωΐΡηΔιο, Exo_9:9; Job_2:7, etc.)
Mounce Concise Greek Dictionary
ἕλκος helkos 3x
pr. a wound; hence, an ulcer, sore, Luk_16:21 ; Rev_16:2 ; Rev_16:11
Abbott-Smith Greek Lexicon
ἑλκος , -εος (-ους ), τό
[in LXX : Exo_9:9-11 , Lev_13:18-27 , 2Ki_20:7 , Job_2:7 ( H7822 );]
1. a wound ( Hom .).
2. a sore, an ulcer ( Thuc ., al. ): Luk_16:21 , Rev_16:2 ; Rev_16:11 .†
Moulton & Milligan — Vocabulary of the Greek NT
ἕλκος [page 203]
Syll 802 .114 (iii/B.C.) ὑπό του ἀγρίου ἕλκεος δεινῶς διακείμ [εν ]ος , 803 .38 (iii/B.C.) ἀνὴρ ἐ [ντὸ ]ς τᾶς κοιλίας ἕλκος ἔχων . For ἕλκωσις , ulceration, see Vett. Val. pp. 3 .4 , 236 .8 .
Liddell-Scott — Intermediate Greek Lexicon
ἕλκος ἕλκος, εος, [Etym: ἕλκω] "a wound", Il. , attic "a festering wound", ἕλκος ὕδρου "the festering bite" of a serpent, Il. : "of plague-ulcers", Thuc. metaph. "a wound, loss", Aesch. , Soph.
STEPBible — Tyndale Abridged Greek Lexicon
ἑλκος, -εος (-ους), τό
[in LXX: Exo.9:9-11, Lev.13:18-27, 4Ki.20:7, Job.2:7 (שְׁחִין) ;]
__1. a wound (Hom.).
__2. a sore, an ulcer (Thuc., al.): Luk.16:21, Rev.16:2, 11.†
(AS)