Definition of cracker in English:

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Pronunciation: /ˈkrakə/


1A person or thing that cracks.
Example sentences
  • Any right minded code cracker would know what he just told me.
  • The remaining states, like Minnesota, provide lots of fun for the determined code cracker.
  • It was six feet tall and held a rocket launcher in one claw and a giant stainless steel shell cracker in the other.
1.1An installation for cracking hydrocarbons: a catalytic cracker
More example sentences
  • The company suffered a series of accidents, culminating in a blaze at its catalytic cracker.
  • The catalytic cracker takes a number of feedstocks, including heavy gas and residue, from the lubricant treatment plant.
  • Light olefins from the fluid catalytic cracker are processed in either hydrofluoric or sulfuric acid units.
1.2A person who breaks into a computer system, typically for an illegal purpose.
Example sentences
  • The case studies are in-depth descriptions of how three crackers have broken into computers.
  • Sure, no electronic voting system is yet safe enough to withstand computer crackers.
  • On infected machines, it opens a back door that allows a cracker to control the computer using IRC.
2A decorated paper cylinder which, when pulled apart, makes a sharp noise and releases a small toy or other novelty: a Christmas cracker
More example sentences
  • And after their roast turkey dinner, the gang pulled the crackers and donned the paper hats.
  • The cracker fell apart and just hung there all limp in my hand.
  • The gathering enjoyed a beautiful four course meal and enjoyed pulling Christmas crackers across the tables.
2.1A firework that explodes with a sharp noise.
Example sentences
  • At 7: 47 there were crackers exploding everywhere.
  • The bombardment by bangers, crackers and fireworks was such that there was hardly a silent minute in any town.
  • Boisterous crowds dispelled the darkness of night with fireworks as crackers shattered the stillness of the night.
3A thin dry biscuit, typically eaten with cheese: the sausage is delicious on hot toast or crackers
More example sentences
  • She grabbed a few crackers and cream cheese, grabbed her backpack, and hiked upstairs to start.
  • Spread smoked salmon and low-fat cream cheese on whole wheat crackers or pith rounds and top with fresh dill.
  • He brought the wine. I organised the cheese and crackers.
3.1A light crisp made of rice or tapioca flour: prawn crackers
More example sentences
  • They threw back local smoked mussels served on crisp rice crackers with mayonnaise.
  • Seaweed is commonly eaten by the Japanese in a variety of snack foods, including tiny crisp rice crackers.
  • This neighbour boy eats sweet potato and rice crackers.
4British informal A fine example of something: don’t miss this cracker of a CD
More example sentences
  • An absolute cracker of a match is confidently expected.
  • In the other semi-final, Bishopthorpe edged out Pickering Town on penalties after a cracker of a match.
  • Oh, I have a cracker of a photo of the two of us after a massive goodbye cry, when I left Australia 10 years ago.
4.1An attractive person, especially a woman: you look a cracker
5US offensive another term for poor white.


be not worth a cracker

Australian /NZ informal Be of no value: the battered old boat was not worth a cracker
More example sentences
  • Remember, all this lot are just copies. Not worth a cracker!
  • I saw these people every day when I was in local government and they are not worth a cracker.
  • Mum emphasized he's not worth a cracker, having never done a decent day's work in his life.

Words that rhyme with cracker

alpaca, attacker, backer, clacker, claqueur, Dhaka, hacker, Hakka, lacquer, maraca, paca, packer, sifaka, slacker, smacker, stacker, tacker, tracker, whacker, yakka

For editors and proofreaders

Line breaks: crack¦er

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