Strong's Concordance

Original word: σκόλοψ
Transliteration: skolops
Definition (short): thorn
Definition (full): anything pointed, a stake, thorn

NAS Exhaustive Concordance

Word Origin: a prim. word
Definition: anything pointed, spec. a stake, thorn
NASB Translation: thorn (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

Perhaps from the base of skelos and optanomai; withered at the front, i.e. A point or prickle (figuratively, a bodily annoyance or disability) -- thorn.

see GREEK skelos

see GREEK optanomai

KJV: And lest I should be exalted above measure through the abundance of the revelations, there was given to me a thorn in the flesh, the messenger of Satan to buffet me, lest I should be exalted above measure.
NASB: Because of the surpassing greatness of the revelations, for this reason, to keep me from exalting myself, there was given me a thorn in the flesh, a messenger of Satan to torment me-- to keep me from exalting myself!