slamming

Multiple Entries:
  slamming    slam  

Concise Oxford English Dictionary © 2008 Oxford University Press:
slamming

▶noun the practice of switching a customer from one telephone service provider to another without the customer's authorization.

Concise Oxford English Dictionary © 2008 Oxford University Press:
slam1

▶verb (slams, slamming, slammed)

• 1 shut or be shut forcefully and loudly.

  ■ push or put somewhere with great force.

  ■ (often slam into) crash or strike heavily into.

  ■ put into action suddenly or forcefully: I slammed on the brakes.

  ■ short for slam-dance.

• 2 informal criticize severely.

• 3 informal, chiefly N. Amer. easily score points against or defeat.

▶noun

• 1 a loud bang caused by the forceful shutting of something.

• 2 N. Amer. informal prison. [abbrev. of slammer.]

• 3 chiefly US a poetry contest in which competitors recite their entries and are judged by members of the audience.

– origin C17: prob. of Scand. origin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
slam2

▶noun Bridge a grand slam (all thirteen tricks) or small slam (twelve tricks), for which bonus points are scored if bid and made.

– origin C17 (orig. the name of a card game): perh. from obs. slampant ‘trickery’.