Crossword Genius

Lobby organisation's initial greeting (5)

Ross

I believe the answer is:

hallo

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

'lobby organisation's initial' is the wordplay.
'lobby' becomes 'hall' ('hall' can be a synonym of 'lobby').
'initial' suggests taking the first letters.
The first letter of 'organisation' is 'o'.
'hall'+'o'='HALLO'

(Other definitions for hallo that I've seen before include "First indication" , "greeting" , "I say" , "welcoming for visitors?" , "Word welcoming" .)

I've seen this clue in The Telegraph.
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