Based on the clue 'a narrow opening in rock or the last name of a sta...', what is the answer?

Based on the clue 'a narrative song of folk origin from an old proven...', what is the answer? Based on the clue 'a narrow alley between walls houses or what you r...', what is the answer? Based on the clue 'a narrow connecting part of some tools its also pr...', what is the answer? Based on the clue 'a narrow exclusive group that shares an interest p...', what is the answer? Based on the clue 'a narrow passage separates canadas ellesmere islan...', what is the answer? Based on the clue 'a narrow peninsula called the palisados protects t...', what is the answer? Based on the clue 'a narrow tube or the type of action that explains ...', what is the answer? Based on the clue 'a narrowing of traffic flow leading to congestion', what is the answer?