frontal lobe

noun Anatomy.

1. the anterior part of each cerebral hemisphere, in front of the central sulcus.

noun

1. anatomy the anterior portion of each cerebral hemisphere, situated in front of the central sulcus

n.

1. The largest portion of each cerebral hemisphere, anterior to the central sulcus.

1. The largest and forwardmost lobe of each cerebral hemisphere, responsible for the control of skilled motor activity, including speech. Mood and the ability to think are also controlled by the frontal lobe.