linguolabial

From Wiktionary

[change] Adjective

Positive inguolabial

Comparative more linguolabial

Superlative most linguolabial

1. (phonetics) Produced with the tongue touching the top lip.

   The Big Nambas language contains a linguolabial phoneme (sound).

[change] Noun

Singular linguolabial

Plural linguolabials

1. A linguolabial consonant.

   Linguolabials can be difficult to make when you are in the middle of talking..