Dell Incorporated, the first to shine (7)
I believe the answer is:
'to shine' is the definition.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for glisten that I've seen before include "Shine or sparkle wetly" , "Gleam by reflecting light" , "Let sing (anag) -- shine" , "Singlet (anag.); tingles (anag.)" , "'Shine, as if wet (7)'" .)