Based on the clue 'avian verb meaning to sell goods in public often b...', what is the answer?

Based on the clue 'avian term for a big fat zero', what is the answer? Based on the clue 'avian term for a conservative', what is the answer? Based on the clue 'avian term for an abrupt quitting of an addictive ...', what is the answer? Based on the clue 'avian term for the offstage area where the actors ...', what is the answer? What is referred to by 'aviation team alcock'? What is referred to by 'aviations mysterious billionaire'? What is referred to by 'aviator the red baron'? Based on the clue 'aviator wraparound john lennon are styles of thes...', what is the answer?