CAT

• cat [countable]
• 1
• a) a small animal with four legs that people often keep as a pet. Cats sometimes kill small animals and birds [↪ feline]
• tabby/ginger/tortoiseshell etc cat (=colours of cats)
• a tom cat (=a male cat)
• b) also big cat a large animal such as a lion or tiger
• 2

   let the cat out of the bag

  to tell someone a secret, especially without intending to
• 3

   put/set the cat among the pigeons

  to do or say something that causes arguments, trouble etc
• 4

   play (a game of) cat and mouse (with somebody)

  to pretend to allow someone to do or have what they want, and then to stop them from doing or having it:
• The police played an elaborate game of cat and mouse to trap him.
• 5

   the cat's whiskers/pyjamas

  informal something or someone that is better than everything else:
• I really thought I looked the cat's whiskers in that dress.
• 6

   like a cat on hot bricks

  British English, like a cat on a hot tin roof American English so nervous or anxious that you cannot keep still or keep your attention on one thing
• 7

   not stand/have a cat in hell's chance (of doing something)

  informal to not have any chance of succeeding:
• They don't have a cat in hell's chance of being elected.
• 8

   when the cat's away (the mice will play)

  used to say that people will not behave well when the person who has authority over them is not there
• 9

   like the cat that got the cream

  British English, like the cat that ate the canary American English informal very proud or pleased because of something you have achieved or got
• 10

   look like something the cat dragged/brought in

  British English informal to look very dirty or untidy

• ➔ raining cats and dogs

   at rain2 (1)

   ; ➔ there's not enough room to swing a cat

   at room1 (5)

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.