Enter a clue or pattern or both:
The Clue
Receipt (7 letter answer)
The Answer
VOUCHER
Tags
Notes
The answer VOUCHER is so rare that it appears less than once every 2500 puzzles.
Definition
VOUCHER as a noun:
1. (voucher, verifier) = someone who vouches for another or for the correctness of a statement
2. a document that serves as evidence of some expenditure
3. (coupon, voucher) = a negotiable certificate that can be detached and redeemed as needed