Diverted Nile river boat (5)
I believe the answer is:
liner
'boat' is the definition.
(I've seen this before)
'diverted nile river' is the wordplay.
'diverted' indicates anagramming the letters (each letter get diverted elsewhere).
'river' becomes 'r' (abbreviation).
'nile' anagrammed gives 'line'.
'line'+'r'='LINER'
(Other definitions for liner that I've seen before include "reinforcement" , "Craft" , "Cruise ship" , "cruise vessel" , "may be demonstrated by make-up artist" .)