Bilabial

Bilabial sounds are sounds made at the lips. ‘Bi-’ means ‘two’, and ‘labial’ is an adjective based on the Latin word for ‘lips’. In English, the sounds [p b m] are bilabial. If you say [apa aba ama] and look in the mirror, you will see that they look identical. If you say the sounds silently to yourself and concentrate on your lips, you will feel that the two lips touch one another for a short period, and the action is basically the same for all three sounds.