adjective
Definition: Describing sounds that are made using both lips together, like the letters b, p, m, and w.
Example: The sounds 'b' and 'p' are examples of bilabial consonants.
noun
Definition: A sound made by bringing both lips together, such as the sounds of 'p', 'b', and 'm'.
Example: In phonetics, the sounds 'p', 'b', and 'm' are classified as bilabial consonants.