Crossword Genius

Greeting a student with old laugh (5)

Ross

I believe the answer is:

aloha

'greeting' is the definition.
(I've seen this before)

'a student with old laugh' is the wordplay.
'student' becomes 'L' (as in L-plates for learner drivers).
'with' means one lot of letters go next to another.
'old' becomes 'o' (abbreviation).
'laugh' becomes 'ha'.
'a'+'l'+'o'+'ha'='ALOHA'

(Other definitions for aloha that I've seen before include "greeting in Oahu" , "Hawaiian farewell" , "Hawaiian "ciao"" , "Hello from Honolulu?" , "Hi! in Honolulu" .)

I've seen this clue in The Mirror and The Daily Express.
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