curtain raising
— Noun
– English
~ the first performance (as of a theatrical production); "the opening received good critical reviews"
croupier's rake
— Noun
– English
~ a small rake used by a croupier to move chips around on the table
crepitation rale
— Noun
– English
~ the crackling sound heard on auscultation when patients with respiratory diseases inhale; associated with tuberculosis and pneumonia and congestive heart failure