Contacted a Weasley by phone for some Hogwarts equipment (8)

I believe the answer is:

cauldron

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

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for cauldron that I've seen before include "A large deep pot for boiling things" , "Witch's brewing pot" , "Witches' vessel" , "Large kettle" , "Very large metal pot for boiling" .)

I've seen this clue in The Independent.

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