1. dies or passes away (informal, chiefly Australian and New Zealand)
Usage: informal; chiefly Australian and New Zealand English
2. worries or is anxious about something (informal, chiefly Australian)
Usage: informal; chiefly Australian English; often used with 'about'

Examples

• He carks it after a long illness.
• Don't cark it over the exam—you'll do fine.
• She carks about every little thing.
• The old dog finally carked it last winter.
• He's always carking about money troubles.