The Collaborative International Dictionary
Muckworm \Muck"worm`\, n.
(Zo["o]l.) A larva or grub that lives in muck or manure; -- applied to the larv[ae] of the tumbledung and allied beetles.
One who scrapes together money by mean labor and devices; a miser. ``Misers are muckworms.''
--Pope.
Wiktionary
n. 1 A larva living in mud or manure. 2 Someone who gathers wealth through overwork of employees and sordid means; a miser.
Usage examples of "muckworm".
That is, he felt he should, whether he wanted to see the muckworm or not, to find out what all the tomfoolery was about and put a stop to it.
And if he was such a shabster as to turn her away, he would find he had to deal with my Lord Desford, who would cast aside the deference to his elders so carefully drilled into him from his earliest days, and would counsel the old muckworm in explicit terms to think well before he behaved in so scaly a fashion as must alienate even the few friends he had, once the story became known, as he, Desford, would make it his business to see that it did.