besna -ben- gismu

x₁ is a/the brain [body-part] of x₂; [metaphor: intelligence, mental control].

Also cerebral. See also menli, stedu, rango, pensi.

In notes:

menli: x₁ is a mind/intellect/psyche/mentality/[consciousness] of body x₂.
pensi: x₁ thinks/considers/cogitates/reasons/is pensive about/reflects upon subject/concept x₂.
rango: x₁ is a/the body organ [body-part] of body/species x₂ performing function x₃.
stedu: x₁ is a/the head [body-part] of x₂; [metaphor: uppermost portion].
selbesna: x₂=b₁ is a brain of body x₁=b₂.
amgidala: x₁ is an amygdala in organism x₂, with function x₃.
intele: x₁ is an intellect of bearer x₂