Foot caught as lady moves round (6)

I believe the answer is:

dactyl

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'foot' is the definition.
(dactyl is a kind of foot)

'caught as lady moves round' is the wordplay.
'caught as' becomes 'ct' (I am not sure about the 'as' bit.**).
'moves' indicates an anagram.
'round' indicates putting letters inside.
'lady' is an anagram of 'dayl'.
'ct' put within 'dayl' is 'DACTYL'.

Can you help me to learn more?

(Other definitions for dactyl that I've seen before include "Metrical unit of poetry" , "Metrical foot" , "Foot of three syllables" , "Metrical unit with stressed-unstressed-unstressed syllables" .)

I've seen this clue in The Times.

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