noun
lobe
LOHB/ləʊb/
A rounded or projecting part of an organ, leaf, or other structure.
The finger points to the ear's rounded lobe.

Etymology
Greek lobos covered both vegetable pods and flap-like body parts, including earlobes and divisions of the liver or lungs. Their shared image is a rounded projecting part.
In context
the frontal lobe controls movement and executive function which is our ability to make decisions
More examples
- Several lobes divided the leaf.
- The brain model showed each lobe.
- She examined the lobe.
Forms
lobe · lobes
Similar words
- projection
- Any part extending outward, not necessarily rounded.
- section
- A part without a particular shape.