1. to refuse to provide loans or insurance to people in certain areas, especially minority neighborhoods
Usage: finance; discriminatory practice
2. to mark with a red line
3. to operate an engine at maximum speed
Usage: automotive

1. a boundary line marked in red
2. the maximum safe operating speed of an engine
Usage: automotive

Examples

• Banks were accused of redlining certain neighborhoods.
• The editor redlined several paragraphs for revision.
• Don’t redline the engine or you’ll damage it.
• The tachometer needle hit the redline.
• The map showed a clear redline between the districts.
• He pushed the car to its redline on the highway.
• The practice of redlining was outlawed in 1968.