Poker glossary
Hook
Hook is poker slang for the jack, because the letter J looks like a fish hook.
The simple explanation
If someone says 'a pair of hooks', he has a pair of jacks. The J in the corner of the card looks like a hook.
A closer look
Hook is one of several nicknames for the jack, with jake, john and knave. It is used in all poker games. Many card nicknames come from the shape of the symbol, so they help new players remember the cards.
A practical example
A player says that he has 'a hook and a king' and shows J♦ K♣.
Full explanation
Hook is poker slang for the jack, because the letter J looks like a fish hook.
Hook is slang for a jack.
The name comes from the shape of the letter J.
It is used in all variants.
The same card is also called jake, john or knave.