Possible Clues:

• Run, as colors in the wash
• Run off the edges of a page
• Run off pages
• What some cuts do
• "If you prick us, do we not __?": "The Merchant of Venice"
• What an errant red sock may do in a load of whites
• Extort money from, e.g.
• Do radiator maintenance
• Tend to the radiator
• Drain the brakes