It's such a lovely word, is quarantine. It could be some juicy fruit, or a type of heavy shining silk, or wine heated with cloves and honey...
...but of course it isn't.
Quarantine is when an animal (sometimes a human animal) is kept by itself to stop it spreading a disease.
Quarantine is a rather special word because it's one of the very few to be commonly understood when written in flags.
Unfortunately the understanding-thing falls down a little bit because the yellow signal flag Q, for quarantine:
when flown alone from a ship indicates that there's actually no disease on board, and so the ship isn't in quarantine.
I'm sure there's a good reason for this, but I haven't the faintest idea what it is.
Word To Use Today: quarantine. This word comes from the Italian quarantina, which means a period of forty days, from the Latin quadrāgintā.