Scandinavian king knocked over by worker, cross (7)

I believe the answer is:

beefalo

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

'scandinavian king knocked over by worker' is the wordplay.
'scandinavian king' becomes 'olaf' (I have seen 'Norwegian king' mean 'olaf' so perhaps 'king' could also mean 'olaf'. I am not sure about the 'scandinavian' bit.**).
'knocked over' shows that the letters should be reversed in order.
'by' means one lot of letters go next to another.
'worker' becomes 'bee' (I've seen this before).
'olaf' back-to-front is 'falo'.
'falo' after 'bee' is 'BEEFALO'.

Can you help me to learn more?

(Another definition for beefalo that I've seen is " Cross".)

I've seen this clue in The Telegraph.

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