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