Based on the clue 'a thin layer of tissue the walls of arteries have ...', what is the answer?

Based on the clue 'a thief or the bent part of an arm', what is the answer? Based on the clue 'a thief who steals tomes from the library', what is the answer? Based on the clue 'a thin layer of decorative wood used to cover a ch...', what is the answer? Based on the clue 'a thin layer of tissue on an animal', what is the answer? Based on the clue 'a thin membrane helps this instrument produce its ...', what is the answer? Based on the clue 'a thin membrane or layer as of bone tissue or cell...', what is the answer? Based on the clue 'a thin pancake with a concord fruit filling', what is the answer? Based on the clue 'a thin piece of rigid material to maintain a body ...', what is the answer?