Worm - Vine's Expository Dictionary of New Testament Words
Worm[ 1,,G4663, skolex ]
a worm which preys upon dead bodies," is used metaphorically by the Lord in Mark 9:48; in some mss. Mark 9:44,Mark 9:46, cp. Isaiah 66:24. The statement signifies the exclusion of the hope of restoration, the punishment being eternal.
[ 2,,G4662, skolekobrotos ]
denotes "devored by worms" (skolex, and bibrosko, "to eat"), Acts 12:23.