Greeting with love in Hawaii (5)
I believe the answer is:
aloha
'greeting' is the definition.
(I've seen this in another clue)
'love in hawaii' is the wordplay.
I cannot really understand how this works, but
'love' could be 'o' (love means zero in tennis) and 'o' is found within the answer.
'hawaii' could be 'ha' (abbreviation for Hawaii) and 'ha' is located in the answer.
This explanation may well be incorrect...
'with' is the link.
Can you help me to learn more?
(Other definitions for aloha that I've seen before include "A Polynesian hello or goodbye" , "Hawaiian farewell" , "Hello from Honolulu?" , "Welcome to Honolulu!" , "Hello or goodbye in Hawaii" .)