#0948 בּוּץ buwts {boots}

 from an unused root (of the same form) meaning to bleach, i.e.
    (intransitive) be white; TWOT - 219; n m

—Hebrew Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) byssus, a costly, fine white linen cloth made in Egypt

—Brown-Driver-Briggs (Old Testament Hebrew-English Lexicon)

—Strong's (Hebrew & Chaldee Dictionary of the Old Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - fine linen 7, white linen 1; 8

—Exhaustive Concordance (KJV Translation Frequency & Location)