Gets ones teeth into (5)

I believe the answer is:

bites

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'gets' is the definition.
The definition and answer can be both to do with contact as well as being verbs in their -s form.
Perhaps 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 bites that I've seen before include "Tears with the teeth" , "Breaks with the teeth" , "Morsels" , "Nibbles" , "Mouthfuls" .)

I've seen this clue in the Evening Standard.

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