Crossword Genius

Burst, irruption, using rider’s equipment (7)

Ross

I believe the answer is:

stirrup

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

'rider's equipment' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

'burst irruption' is the wordplay.
'STIRRUP' is hidden in amongst the letters.
However, I'm uncertain how this is indicated.

'using' is the link.

Can you help me to learn more?

(Other definitions for stirrup that I've seen before include "Rider's foothold" , "Foot rest for a rider" , "one puts the boot into" , "Support for a rider's feet" , "Equestrian foot support" .)

I've seen this clue in The Times.
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