Strong's #1668: helkos (pronounced hel'-kos)

probably from 1670; an ulcer (as if drawn together):--sore.

Thayer's Greek Lexicon:

̔́

helkos

1) a wound, especially a wound producing a discharge pus

2) a sore, an ulcer

Part of Speech: noun neuter

Relation: probably from G1670

Usage:

This word is used 3 times:

 

Luke 16:21: "dogs came and licked his sores."
Revelation 16:2: "a noisome and grievous sore upon the men which had"
Revelation 16:11: "pains and their sores, and repented not"