Wiktionary
n. A monstrous creature which features in the horror fiction of Lovecraft.
Wikipedia
A shoggoth (occasionally shaggoth) is a monster in the Cthulhu Mythos. The being was mentioned in passing in sonnet XX ("Night-Gaunts") of H. P. Lovecraft's sonnet cycle Fungi from Yuggoth, written in 1929– 30, and was expounded upon in his novella At the Mountains of Madness (1931).
Usage examples of "shoggoth".
When the star-headed Old Ones on this planet had synthesized their simple food forms and bred a good supply of Shoggoths, they allowed other cell groups to develop into other forms of animal and vegetable life for sundry purposes, extirpating any whose presence became troublesome.
Five kinky edges, to be exact, since he was still obsessed with the profound new understanding of the Law of Fives he had achieved the night he saw the shoggoth turn into a rabbit.
Loads, however, were drawn by beasts of burden - Shoggoths under the sea, and a curious variety of primitive vertebrates in the later years of land existence.
Another cause of the landward movement was the new difficulty in breeding and managing the Shoggoths upon which successful sea life depended.
Sculptured images of these Shoggoths filled Danforth and me with horror and loathing.
Pictures of this war, and of the headless, slime-coated fashion in which the Shoggoths typically left their slain victims, held a marvelously fearsome quality despite the intervening abyss of untold ages.
Thereafter the sculptures showed a period in which Shoggoths were tamed and broken by armed Old Ones as the wild horses of the American west were tamed by cowboys.
Though during the rebellion the Shoggoths had shown an ability to live out of water, this transition was not encouraged - since their usefulness on land would hardly have been commensurate with the trouble of their management.
The newly bred Shoggoths grew to enormous size and singular intelligence, and were represented as taking and executing orders with marvelous quickness.
To keep on with the work of the upper world it had become necessary to adapt some of the amorphous and curiously cold-resistant Shoggoths to land life - a thing the Old Ones had formerly been reluctant to do.
A horrible thought: it reminded him, uncomfortably, of the shoggoths in that damnable Necronomicon that Kolnier was always trying to get him to read when he was stoned, saying that was the only way to understand it.