imaginary creature - a creature of the imagination; a person that exists only in legends or myths or fictionimagination, imaginativeness, vision - the formation of a mental image of something that is not perceived as real and is not present to the senses; "popular imagination created a world of demons"; "imagination reveals what the world could be" Death - the personification of death; "Death walked the streets of the plague-bound city" giant - an imaginary figure of superhuman size and strength; appears in folklore and fair tales hobbit - an imaginary being similar to a person but smaller and with hairy feet; invented by J.R.R. Tolkien Maxwell's demon - an imaginary creature that controls a small hole in a partition that divides a chamber filled with gas into two parts and allows fast molecules to move in one direction and slow molecules to move in the other direction through the hole; this would result in one part of the container becoming warmer and the other cooler, thus decreasing entropy and violating the second law of thermodynamics mermaid - half woman and half fish; lives in the sea merman - half man and half fish; lives in the sea Martian - imaginary people who live on the planet Mars Humpty Dumpty - an egg-shaped character in a nursery rhyme who fell off a wall and could not be put back together again (late 17th century) Jack Frost - a personification of frost or winter weather Mammon - (New Testament) a personification of wealth and avarice as an evil spirit; "ye cannot serve God and Mammon" monster - an imaginary creature usually having various human and animal parts witch - a being (usually female) imagined to have special powers derived from the devil psychopomp - a conductor of souls to the afterworld; "Hermes was their psychopomp" sylph - an elemental being believed to inhabit the air Tom Thumb - an imaginary hero of English folklore who was no taller than his father's thumb unicorn - an imaginary creature represented as a white horse with a long horn growing from its forehead |