lobe

UK: ləʊb | US: loʊb

Definition
  1. n. a rounded projection or division of an organ (e.g., brain, lung, or liver)

  2. n. a soft, pendulous part of the ear

  3. n. (botany) a rounded segment of a leaf

Structure
lobe <rounded part>
Etymology

The word "lobe" traces back to the Greek lobos (λοβός), meaning "a rounded projection" or "hull of a pod." It entered Late Latin as lobus, retaining its anatomical and botanical sense of a rounded division. The term was later adopted into Middle French as lobe before entering English in the 16th century. Its consistent association with soft, curved structures—whether in organs, ears, or leaves—reflects the original Greek focus on natural rounded forms.

Examples
  1. The frontal lobe of the brain controls decision-making.

  2. She gently tugged on her ear lobe while thinking.

  3. The leaf's lobe was deeply serrated at the edges.

  4. A CT scan revealed a shadow in the lower lobe of his lung.

  5. The artist painted the lobe of the ear with delicate shading.