'Muckworm' definitions:

Definition of 'Muckworm'

From: GCIDE

Muckworm \Muck"worm`\ (m[u^]k"w[^u]rm`), n.
1. (Zool.) A larva or grub that lives in muck or manure; -- applied to the larvae of the tumbledung and allied beetles. [1913 Webster]
2. One who scrapes together money by mean labor and devices; a miser. "Misers are muckworms." --Pope. [1913 Webster]