receipt
nounUK /rɪˈsiːt/
US /rɪˈsiːt/
A small piece of paper that shows you paid for something.
Keep the receipt in case you want to return the shoes.
OTHER MEANINGS
2. The act of receiving something.
The receipt of the package made her smile.
3. A written acknowledgment that money or goods were received.
The charity sent a receipt for the donation.
4. A recipe or formula, especially in older use.
The old book contained a receipt for making ink.