Jisho

×
Wikipedia definition
1. Single transverse palmar creaseIn humans, a single transverse palmar crease is a single crease that extends across the palm of the hand, formed by the fusion of the two palmar creases that people typically have. Because it resembles the usual condition of non-human simians, it is also known as a simian crease or simian line, although these terms have widely fallen out of favor due to their pejorative connotation.
Read “Single transverse palmar crease” on English Wikipedia
Read “猿線” on Japanese Wikipedia
Read “Single transverse palmar crease” on DBpedia

Discussions

to talk about this word.