chalk off

Verb

 * 1)  To set off an area or shape with chalk.
 * 2)  To record a score or event, as if on a chalkboard.
 * 3)  To disallow or cancel
 * 4)  To chalk (someone) up dismissively or jeeringly.
 * We had chalked him off as an idiot!
 * 1)  To dismiss or be dismissive towards (someone or something); to reject (someone or something).
 * He seemed like an idiot, so I chalked him off.
 * 1)  To deduct from something; to separate from something.
 * The funds are going to be chalked off from the events fund.
 * 1)  To mark off (something).
 * 2)  To kill (someone).
 * 1)  To mark off (something).
 * 2)  To kill (someone).