sublingua
/sʌbˈlɪŋɡwə/Zoology
noun
In certain mammals, especially lemurs, lorises, and related primates: a (typically cartilaginous) brushlike structure under the tongue.
Origin
Mid 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. Apparently from sub- or its etymon classical Latin sub- + classical Latin lingua lingua, after German Unterzunge.