Showing tact, Paul moved slingshot (8)

I believe the answer is:

catapult

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'slingshot' is the definition.
(synonyms)

'showing tact paul moved' is the wordplay.
'tact paul' anagrams to 'CATAPULT'.
But, I am not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for catapult that I've seen before include "Throwing device or sling" , "Stone-thrower" , "Launch" , "Y-shaped stick with elastic between the arms" , "Slingshot" .)

I've seen this clue in The Daily Express.

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