Crossword Genius

Pressure countering tubular section of underwear (9)

Ross

I believe the answer is:

pantihose

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

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

'pressure countering tubular section of' is the wordplay.
I cannot really see how this works, but
'pressure' could be 'p' (abbreviation) and 'p' is located in the answer.
'section' could be 's' (legal abbreviation) and 's' is found within the answer.
'of' could be 'o' and 'o' is found within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for pantihose that I've seen before include "In teashop (anag.)" , "Tights" , "garments?" , "underwear" .)

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