Crossword Genius

CO scaring me in a funny way (9)

Ross

I believe the answer is:

screaming

'co' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

'scaring me in a funny way' is the wordplay.
'in a funny way' is an anagram indicator (a funny or unusual order for the letters).
'scaring'+'me'='scaringme'
'scaringme' is an anagram of 'SCREAMING'.

(Other definitions for screaming that I've seen before include "Uttering sharp piercing cries" , "Emitting sharp, piercing cries" , "Yelling" , "Shrieking" .)

I've seen this clue in The Guardian.
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