Avoid confronting stores about water parsnip (7)

I believe the answer is:

skirret

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

'water parsnip' is the definition.
(I know that (43241eef cf4db256 a355aa8f)\nI know that (WikidataSubPropertyOf 43241eef IsSubclassOf)\nTherefore, Sium sisarum is a type of Sium)

'avoid confronting stores about' is the wordplay.
I cannot really see how this works, but
'about' could be 're' ('re' means regarding or about) and 're' is present in the answer.
'avoid' could be 'skirt' (skirt can mean to go around or avoid) and 'skirt' is found within the leftover letters.
No letters remain.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for skirret that I've seen before include "Plant of parsley family with edible root; striker (anag.)" , "tubers" .)

I've seen this clue in The Times.

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