"Hi" in Hilo (5)
I believe the answer is:
aloha
'hi in hilo' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for aloha that I've seen before include "greeting in Oahu" , "Hawaiian greeting" , "A Polynesian hello or goodbye" , "Hawaiian "ciao"" , "A greeting in Hawaii" .)