1. a device or material that removes unwanted substances from liquids, gases, or light passing through it
2. a computer program or feature that blocks or selects certain types of information
Usage: computing

1. to pass a liquid, gas, or light through a filter to remove unwanted substances
2. to remove or block unwanted elements from something
3. to move slowly or gradually

Examples

• The coffee filter removes the grounds from the liquid.
• She changed the air filter in her car.
• The spam filter blocked unwanted emails.
• Filter the water before drinking it.
• The teacher filtered out inappropriate content from the website.
• Sunlight filtered through the trees.
• News of the accident slowly filtered through the community.