redline

1. To operate a device at one or more redlines.

2. (Canada, US, urban studies) To deny or complicate access to services (such as banking, insurance, or healthcare) to residents in specific, often racially determined, areas.Examples: "Already ‘redlined’ by profit-hungry telcos, the inhabitants of poor inner city areas can be shut out of the new on-line services through lack of money."Antonyms: greenlineCanadaUS

3. (audio engineering) To achieve audio levels that will cause clipping (indicated by red in an audio meter).