Stars secure as you and me? (7)
I believe the answer is:
pegasus
'stars' is the definition.
(constellation)
'secure as you and me?' is the wordplay.
'secure' becomes 'peg'.
'you and me?' becomes 'us'.
'peg'+'as'+'us'='PEGASUS'
(Other definitions for pegasus that I've seen before include "mount in the clouds" , "high horse" , "Winged horse - constellation" , "madeup creature" , "Flying horse of myth" .)