Brown Driver Briggs

 Meshach = "guest of a king"
1. the godly friend of Daniel who Nebuchadnezzar renamed Meshach; one
of the three friends who with Daniel refused to make themselves
unclean by eating food from the king's table which went against the
dietary laws which God had given the Jews; also one of the three who
were thrown into the fiery furnace for refusing to bow down to a
graven image of Nebuchadnezzar and who were saved by the angel of
the Lord
  1) original name 'Mishael'