Meaning

• To arrange in a stack, or to add to an existing stack.

  "Please stack those chairs in the corner."

• To arrange the cards in a deck in a particular manner.

  "This is the third hand in a row where you've drawn four of a kind. Someone is stacking the deck!"

• To take all the money another player currently has on the table.

  "I won Jill's last $100 this hand; I stacked her!"

• To deliberately distort the composition of (an assembly, committee, etc.).

  "The Government was accused of stacking the parliamentary committee."

• To crash; to fall.

  "Jim couldn′t make it today as he stacked his car on the weekend."

• To operate cumulatively.

  "A magical widget will double your mojo. And yes, they do stack: if you manage to get two magical widgets, your mojo will be quadrupled. With three, it will be octupled, and so forth."

• To place (aircraft) into a holding pattern.

• To collect precious metal in the form of various small objects such as coins and bars.

Meaning

• Arranged in a stack

  "The plates were stacked waiting to be cleaned."

• Having large breasts

  "That girl at the party was really stacked."

• Unfairly constructed, as a stacked deck of cards.

  "That game is stacked. Don't even try it."