Worm

dragon

(dragon or mythological serpent)

remords

(internal tormentor)

scarabée

(contemptible being)

ver

(animal)

ver

(self-replicating program)

vermine

(contemptible being)

vis sans fin

(something helical, especially the thread of a screw)

infiltrer

(to get (into) gradually or slowly)

ramper

(to make one's way with a crawling motion)

ramper

(to move with one's body dragging the ground)

s'insinuer

(to get (into) gradually or slowly)

tirer les vers du nez

(to get information that someone is reluctant to give)

vermifuger

(to cure of intestinal worms)