picket : noun Acidic, mediocre wine. An infamous picket.
It's pickle : without value.
Fork (thieves' jargon).
Figuratively and especially in matches, a piquette is a crushing beating or defeat.
Excerpt from the song The Mountain of the French money changer Jean Ferrat (1930-2010):
The wine will no longer be drawn
It was a horrible pickle
But he made centenarians
Not knowing what to do with it
If he didn't trouble your head.