quark

noun5

1. •
   In the Standard Model, one of a number of elementary subatomic particles having fractional electric charge that forms matter. They are theorized not to exist in isolation, but only in combinations in hadrons such as neutrons and protons or in quark–gluon plasmas.
2. •
   A soft, creamy, unripened cheese made from cow's milk, originating from and eaten throughout central, northern, eastern, and southeastern Europe, as well as the Low Countries.
3. •
   An integer that uniquely identifies a text string.
4. •
   (slang) A nonsense, trivial text string.
5. •
   (informal) The black-crowned night heron (Nycticorax nycticorax).