Bad actor has me missing final bits (3)

I believe the answer is:

ham

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'bad actor' is the definition.
(a ham is someone who overacts)

I don't understand the rest of the clue.

(Other definitions for ham that I've seen before include "was preserved from a flood" , "Poor person acting" , "Dried pig thigh" , "Meat for the radio amateur" , "Noah's second son - a bad actor?" .)

I've seen this clue in The Times.

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