This world is only twice used in the Bible, 1 Thessalonians 4:16 Jude 1:9. In this last passage it is applied to Michael, who, in Daniel 10:13,21 12:1, is described as having a special charge of the Jewish nation, and in Revelation 12:7-9 as the leader of an angelic army. So exalted are the position and offices ascribed to Michael, that many think the Messiah is meant.
These dictionary topics are from American Tract Society Bible Dictionary published in 1859. Public Domain, copy freely.
Rand, W. W. "Entry for 'ARCHANGEL'". "American Tract Society Bible Dictionary".