Learner's definition of RECEIPT
1 [count] : a piece of paper on which the things that you buy or the services that you pay for are listed with the total amount paid and the prices for each 2 [noncount], formal : the act of receiving something
The form should be completed and returned within 30 days of receipt.
Open immediately upon/on receipt of the package.
I am in receipt of your instructions. [=I have received your instructions]
3 receipts [plural] : money that a business, bank, or government receives