What is referred to by '8 letters vigor'?

Based on the clue '8 letters describes a roof composed of leaves or s...', what is the answer? Based on the clue '8 letters injuriously long periods of low precipit...', what is the answer? Based on the clue '8 letters overtwisted like an injured knee', what is the answer? Based on the clue '8 letters score 26 eponymous adjective describing ...', what is the answer? Based on the clue '8 letters what the mouse said or with by describin...', what is the answer? What is associated with: 8 members of this team threw the 1919 world series? What is referred to by '8 mile'? Based on the clue '8 of the 10 lowest birthrates for countries are fo...', what is the answer?