Speech sounds (i.e., consonants) formed using both lips, examples of which are /p/, /b/ or /w/. They can be voiced (e.g., bill) or unvoiced (e.g., pill).
See Consonants, Fricative, Glottal, Labio-dental, Lateral sound, Lingua-alveolar (or alveolar), Lingua-dental (or dental), Lingua-palatal (or palatal), Liquid, Plosive, Rhotic sound