Strong's Concordance

Original word: רִקָּבוֹן
Transliteration: riqqabon
Definition (short): rotten
Definition (full): rottenness, decay

NAS Exhaustive Concordance

Word Origin: from raqeb
Definition: rottenness, decay
NASB Translation: rotten (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From raqab; decay (by caries) -- rotten.

see HEBREW raqab

KJV: He esteemeth iron as straw, and brass as rotten wood.
NASB: "He regards iron as straw, Bronze as rotten wood.