Crossword Genius

Welcome at sea for a Scottish cyclist (4)

Ross

I believe the answer is:

ahoy

I'm a little stuck... Click here to teach me more about this clue!

'welcome at sea for' is the definition.
I can't judge whether this defines the answer.

'a scottish cyclist' is the wordplay.
'scottish cyclist' becomes 'hoy' (Sir Chris Hoy. I am not sure about the 'scottish' bit.).
'a'+'hoy'='AHOY'

Can you help me to learn more?

(Other definitions for ahoy that I've seen before include "Shout from sailor" , "Nautical greeting" , "Temporarily blind" , "Sailor's greeting" , "Sailor's shout for attention" .)

I've seen this clue in The Sun.
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