Mariah Carey's "All I Want ___ Christmas Is You" (3)
I believe the answer is:
for
(Other definitions for for that I've seen before include "See 24" , "and 16 and 20: Notwithstanding" , "On the side of" , "Favouring" , "On behalf of" .)
I believe the answer is:
for
(Other definitions for for that I've seen before include "See 24" , "and 16 and 20: Notwithstanding" , "On the side of" , "Favouring" , "On behalf of" .)