Crossword Genius

Maybe stalls Tessa unduly (5)

Ross

I believe the answer is:

seats

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

'maybe stalls' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'tessa unduly' is the wordplay.
'tessa' can be anagrammed to 'SEATS'.
However, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for seats that I've seen before include "Parliamentary constituencies" , "Chairs, stools" .)

I've seen this clue in the Evening Standard.
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