Rotating image of human brain, illustrating the lateral sulcus in the brain. The term sulcus (pl. sulci) is a general descriptive term for a furrow or fissure.
Halo may refer to: 1  Halo (religious iconography), a glow or ring of light around a head or person in art. 2  Halo (series), video game franchise.
Classical Mythology. a shining cloud sometimes surrounding a deity when on earth. 2. a cloud, aura, atmosphere, etc., surrounding a person or thing: The candidate was encompassed with a nimbus of fame. 3. halo (def 1). 4. the type of dense clouds or cloud mass with ragged edges, that yields rain or snow; a rain cloud.