labial
US /ˈleɪ.bi.əl/
UK /ˈleɪ.bi.əl/

1.
relating to the lips or labia
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She applied a moisturizing labial balm.
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The doctor examined the patient's labial area.
2.
(of a consonant) articulated with the lips
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The sounds /p/, /b/, and /m/ are examples of labial consonants.
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In phonetics, a labial sound involves the use of the lips.
1.
a consonant articulated with the lips
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The phonologist identified the sound as a labial.
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Many languages have several different labials.