Welcome in Idaho Larry returned (5)
I believe the answer is:
aloha
'welcome' is the definition.
(I've seen this before)
'in idaho larry returned' is the wordplay.
'in' indicates a hidden word.
'returned' is a reversal indicator.
'ahola' can be found hidden inside 'idaho larry'.
'ahola' in reverse letter order is 'ALOHA'.
(Other definitions for aloha that I've seen before include "A Hawaiian welcome" , "Hawaiian hello or goodbye" , "16 across in Hawaii" , "A halo seen in Polynesian greeting" , "Hawaiian "ciao"" .)