Confer upon (5)
'confer upon' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bestow that I've seen before include "Confer (an honour)" , "Confer or award" , "Grant" , "Set bow to give" , "Award, present as a gift" .)
(Other definitions for award that I've seen before include "Prize in recognition of achievement" , "certificate?" , "Official prize in a draw" , "Grant, confer" , "Write up" .)