Thousand (noun)

1. The number equivalent to the product of 10 and 100; 1,000.
2. A very large number.

Origin:

Middle english, from old english þūsend; akin to old high german zūsunt thousand, latin mille.

Examples:

1. I've told you a thousand times to be careful.
2. A thousand apologies for my delay.
3. It would take a thousand years to complete that task.
4. The company has sold thousands of products this month.
5. He left his job after making a thousand mistakes.