'hawaiian greeting' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for aloha that I've seen before
include
"A halo seen in Polynesian greeting"
,
"Hawaiian farewell"
,
"Hawaiian greeting"
,
"Hi! in Honolulu"
,
"16 across in Hawaii"
.)
I've seen this clue in the Newsday, The Times, The Mirror, The Telegraph, the King Feature Syndicate, the Universal, The Independent, the Sydney Morning Herald, The New York Times, The Irish Times, the USA Today, The Guardian, The Wall Street Journal and The Sun.
I've seen this clue in the Newsday, The Times, The Mirror, The Telegraph, the King Feature Syndicate, the Universal, The Independent, the Sydney Morning Herald, The New York Times, The Irish Times, the USA Today, The Guardian, The Wall Street Journal and The Sun.