Bellybutton – an informal name for the navel. This is the point where our umbilical cord was attached when we were babies and is in the centre of our bellies.

Earlobe – The soft, fleshy lower part of the external ear.

Bicuspid – the two teeth that come before the molars in each quadrant of our mouth (called pre-molars). They get their name because they usually have two cusps.