Definition of worm-shell:
(n) :
A generally tubular invertebrate of the annelid phylum; an earthworm.
(n) :
More loosely, any of various tubular invertebrates resembling annelids but not closely related to them, such as velvet worms, acorn worms, flatworms, or roundworms.
(n) :
(computing) A self-replicating program that propagates through a network, differing from a virus in usually lacking any destructive effects.
(n) :
A contemptible or devious being.
(n) :
(informal or poetic) A maggot.
(v) :
(intransitive) To move with one's body dragging the ground.