According to the Book of Revelation, Wormwood is the name of a fallen angel who will bring plagues upon the earth during the end times. The name Wormwood means "bitterness," and is derived from the Latin term absinthium.

Revelation tells of the end times of the world. It says that God sits on his throne, holding a huge book fastened by seven seals. When Christ breaks the seals, each releases a disaster upon the earth. The seventh and last seal brings seven disasters, each ushered in by the trumpet blast of an angel.

Wormwood is a star (angel) that falls from heaven at the trumpet blast of the third angel, and poisons many waters of the earth, causing multitudes to die.