Brightest star in the constellation Cygnus (5)
I believe the answer is:
deneb
(Other definitions for deneb that I've seen before include "Be Ned (anag) - brightest star in Cygnus" , "First magnitude star in Cygnus" , "Bright star in Cygnus" , "The star Alpha Cygni" , "Bright star; be end (anag.)" .)