Can you explain what 'bouke' mean when used at the beginning of a sentence?

It would mean the same thing as 'sispann', it would mean "to stop"

1. Bouke kriye.
    Stop crying.

2. Bouke fè jouda nan zafè moun.
    Stop meddling into people's affairs.

3. Bouke pale zanmi w mal.
    Stop 'badmouthing' your friends.

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