#2687 καταστέλλω katastello {kat-as-tel'-lo}

 from G2596 and G4724; TDNT - 7:595,1074; v

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

 1) to send or put down, to lower
 2) to put or keep down one who is roused or incensed, to repress,
    restrain, appease, quiet

—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 - appease 1, quiet 1; 2

—Exhaustive Concordance (KJV Translation Frequency & Location)