pig
noun /pɪɡ/
  /pɪɡ/
Idioms - (also hog especially in North American English)an animal with pink, black or brown skin, short legs, a broad nose and a short curly tail. Pigs are kept on farms for their meat (called pork) or live in the wild.
- a pig farmer
 - Pigs were grunting and squealing in the yard.
 - to breed/rear pigs
 
Oxford Collocations Dictionaryadjective- domestic
 - feral
 - wild
 - …
 
- breed
 - keep
 - raise
 - …
 
- grunt
 - squeal
 
- farm
 - farmer
 
 - (informal, disapproving) an unpleasant or offensive person; a person who is dirty or greedy
- Arrogant pig!
 - Don't be such a pig!
 - The greedy pig's eaten all the biscuits!
 - She made a pig of herself with the ice cream (= ate too much).
 - He's a real male chauvinist pig (= a man who does not think women are equal to men).
 - We cooked up a load of pasta and all made pigs of ourselves.
 
Oxford Collocations Dictionaryadjective- fat
 - disgusting
 - greedy
 - …
 
- make a pig of yourself
 
 - (slang) an offensive word for a police officer
 
Word OriginMiddle English: probably from the first element of Old English picbrēd ‘acorn’, literally ‘pig bread’ (i.e. food for pigs).
Idioms 
make a pig’s ear (out) of something 
- (British English, informal) to do something badly; to make a mess of something
 
(buy) a pig in a poke 
- if you buy a pig in a poke, you buy something without seeing it or knowing if it is good enough
- Buying from a catalogue can mean buying a pig in a poke.
 
 
a pig of a something 
- (British English, informal) a difficult or unpleasant thing or task
- I've had a pig of a day.
 
 
pigs might fly (British English) 
(North American English when pigs fly)
- (ironic, saying) used to show that you do not believe something will ever happen
- ‘With a bit of luck, we'll be finished by the end of the year.’ ‘Yes, and pigs might fly!’