Have opportunity to be in jail (3)

I believe the answer is:

can

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'jail' is the definition.
(the can is American slang for prison)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for can that I've seen before include "Airtight metal container" , "Preserve fruit" , "Billy" , "depth charge" , "Metal container for food" .)

I've seen this clue in The Globe and Mail.

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