In Tromso others give comfort (6)
I believe the answer is:
soothe
'comfort' is the definition.
(I know that comfort can be written as soothe)
'in tromso others give' is the wordplay.
'in' indicates a hidden word.
'SOOTHE' is hidden within 'tromso others give'.
(Other definitions for soothe that I've seen before include "Calm down, placate" , "Appease" , "'Console, comfort (6)'" , "Console, pacify" , "Calm; relieve pain" .)