To blaze fiercely/intensely, inflame, burn with anger, Ardour of fire, flame, fiery tempered person, abu lahab - father of flame.
A gap/space between two mountains, a cleft/fissure in a mountain.
Nickname of the Holy Prophet's uncle, whose real name was Abdul Uzza. [[This is a traditional understanding may conflict with 49:11. Does 'abu lahab' describe a specific person or a personality archetype/model?]]