Noun
A message written on a scrap of paper, rolled-up and put in an empty bottle and set adrift on the ocean; traditionally, a method used by castaways to advertise their distress to the outside world.
(figuratively) An analogous message sent off into the world or universe without knowledge of who the recipient will be (although not necessarily without a particular intended recipient); thus, plaques on craft launched into outer space, interstellar radio messages, stationary time capsules, balloon mail, and so on.
Source: en.wiktionary.orgThat was the universe: you could beat it once, you could float a message in a bottle across half of eternity, but the universe would always find a way to have the last laugh. Alastair Reynolds
Do you want Columbus to go across the ocean, or do you want to put a message in a bottle and hope that it lands somewhere? I'd rather have actual people be there. Whether they look like Americans or like the inhabitants of some other country, depends on who has the most drive. Kevin J. Anderson
You be the DJ, I'll be the driver, You put your feet up in the getaway car. I'm flying fast like a, a wanted man. I want you, baby, like you can't understand.Oh, love on the weekend, Love on the weekend. We found a message in a bottle we were drinking. John Mayer
Songs for me are like a message in a bottle. You send them out to the world, and maybe the person who you feel that way about will hear about it someday. Taylor Swift
The idea of a poem as a message in a bottle means that it's sent out towards some future reader, and the reader who opens that bottle becomes the addressee of the literary text. Edward Hirsch