#2508 καθαίρω kathairo {kath-ah'-ee-ro}

 from G2513; TDNT - 3:413,381; v

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

 1) to cleanse, of filth impurity, etc
    1a) to prune trees and vines from useless shoots
    1b) metaph. from guilt, to expiate

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

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

 AV - purge 2; 2

—Exhaustive Concordance (KJV Translation Frequency & Location)