'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 Times, The Telegraph, The Sun, The Independent, The Wall Street Journal, The New York Times, the USA Today, The Irish Times, the Sydney Morning Herald, The Guardian, the Universal, the King Feature Syndicate, The Mirror and the Newsday.
I've seen this clue in The Times, The Telegraph, The Sun, The Independent, The Wall Street Journal, The New York Times, the USA Today, The Irish Times, the Sydney Morning Herald, The Guardian, the Universal, the King Feature Syndicate, The Mirror and the Newsday.