#5286 ὑποπόδιον hupopodion {hoop-op-od'-ee-on}

 from a compound of G5259 and G4228; TDNT - n/a; n n

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

 1) a footstool
    1a) to make one a footstool of one's feet, i.e. to subject, to
        reduce under one's power
    1b) metaph. taken from the practice of conquerors who placed their
        feet on the necks of their conquered enemies

—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 - footstool + G4228 8, footstool 1; 9

—Exhaustive Concordance (KJV Translation Frequency & Location)