Crossword Genius

It was abnormally restricted in Victorian times (5)

Ross

I believe the answer is:

waist

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'restricted in victorian times' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'it was abnormally' is the wordplay.
'abnormally' is an anagram indicator.
'it'+'was'='itwas'
'itwas' with letters rearranged gives 'WAIST'.

Can you help me to learn more?

(Other definitions for waist that I've seen before include "Midriff" , "Narrow part of body" , "Ship's middle" , "Spare tyre location?" , "part of frame" .)

I've seen this clue in The Globe and Mail.
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