Crossword Genius

Cricket skipper sent up: too right! (4)

Ross

I believe the answer is:

root

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'cricket skipper' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.

'sent up too right' is the wordplay.
'sent up' says the letters should be written backwards.
'right' becomes 'r' (common abbreviation).
'too'+'r'='toor'
'toor' in reverse letter order is 'ROOT'.

Can you help me to learn more?

(Other definitions for root that I've seen before include "Reptile" , "burrow" , "Turn up with the snout." , "Rummage, origin" , "Underground part of a plant" .)

I've seen this clue in The Sun.
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