To flush something is to use water for the purpose of removing material for sanitation or maintenance.
The sound of flushing water in a bathroom indicates that a person is finished using a toilet.
If a toilet doesn’t flush properly, you might have to call a plumber to fix it.
A toilet flushes water away from a building to a sewer system.
A person who has an accumulation of ear wax might have to see a doctor to have the wax flushed out from the ear canal.
If any harmful chemicals get into your eyes, it’s necessary to flush your eyes with water.
Fire hydrants need to be flushed occasionally to remove harmful sediment from the pipes.
Before getting a colonoscopy, a person must flush his or her digestive and excretory systems with liquids.
You can’t flush something down the toilet if it’s too big.
We also use "flush" when one thing is flat against the surface of another thing.
The couch is flush against the wall. (It’s right up against the wall.)
The chair is flush against the table.
Use the toolbar on Google Docs to move text flush left or flush right. (flush left = all the way to the left; flush right = all the way to the right) flush left
A ceiling fan that is flush against the ceiling is right up against the surface of the ceiling.
The word "flush" is used for various card games:
If you’re holding a flush, your playing cards are all of the same suit. (suit = hearts, aces, spades, or clubs)
A royal flush in poker is the best possible hand that a person can hold. All of the cards are of the same suit and include a ten, a jack, a queen, a king, and an ace.
You can’t flush something down the toilet if it’s too big.
flush left