ˈliŋg(yə)wəl adjective
Etymology: Medieval Latin lingualis, from Latin lingua + -alis -al
1.
a. : of or relating to the tongue
lingual inflammation
: resembling a tongue
b. : lying near or next to the tongue
a lingual blood vessel
the lingual surface of the teeth
c. of a speech sound : produced by the tongue ; sometimes : dental or cerebral (sense 3a)
2. : linguistic