Crossword Genius

Tropical club hosts royal couple in show (6,3)

Ross

I believe the answer is:

baking hot

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

'tropical' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?

'club hosts royal couple in show' is the wordplay.
'club' becomes 'bat' (as in sporting equipment).
'hosts' means one lot of letters goes inside another (inserted letters are welcomed or hosted).
'royal' becomes 'king' (a king is royal).
'couple in show' becomes 'ho' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'king'+'ho'='kingho'
'bat' going around 'kingho' is 'BAKING-HOT'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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