|Easton's Bible Dictionary|
Reigning, the personal servant or slave of the high priest Caiaphas. He is mentioned only by John. Peter cut off his right ear in the garden of Gethsemane (John 18:10). But our Lord cured it with a touch (Matthew 26:51; Mark 14:47; Luke 22:51). This was the last miracle of bodily cure wrought by our Lord. It is not mentioned by John.
Int. Standard Bible Encyclopedia
mal'-kus (Malchos, from melekh, i.e. "counselor" or "king"): The name of the servant of the high priest Caiaphas whose right ear was smitten off by Simon Peter at the arrest of Jesus in the Garden of Gethsemane (compare Matthew 26:51 Mark 14:47 Luke 22:50 John 18:10). It is noteworthy that Luke "the physician" alone gives an account of the healing of the wound (Luke 22:51). As Jesus "touched his ear, and healed him," the ear was not entirely severed from the head. The words of Jesus, "Suffer ye thus far," may have been addressed either to the disciples, i.e. "Suffer ye that I thus far show kindness to my captors," or to those about to bind him, i.e. asking a short respite to heal Malchus. They were not addressed directly to Peter, as the Greek form is plural, whereas in Matthew 26:52 John 18:11, where, immediately after the smiting of Malchus, Jesus does address Peter, the singular form is used; nor do the words of Jesus there refer to the healing but to the action of his disciple. A kinsman of Malchus, also a servant of the high priest, was one of those who put the questions which made Peter deny Jesus (John 18:26).
C. M. Kerr
Malchus (1 Occurrence)
John 18:10 Simon Peter therefore, having a sword, drew it, and struck the high priest's servant, and cut off his right ear. The servant's name was Malchus. (WEB KJV WEY ASV BBE DBY WBS YLT NAS RSV NIV)