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