also: にんめんそう
noun
mythological growth shaped like a human face
Refers to a legendary tumor or growth that takes the form of a human face, appearing in Japanese folklore and ghost stories.
人面瘡は、江戸時代の怪談によく登場する。
The human-faced tumor often appears in ghost stories from the Edo period.
彼は人面瘡
He got scared after reading a story about someone tormented by a human-faced growth.