Ah, sorry. It stands for “Manufacturer’s Suggested Retail Price.”
In the U.S. the law doesn’t allow a manufacturer to require that retailers sell their product at a particular price, but they’re free to “suggest” one so that’s how we ended up with the MSRP.
It doesn’t carry any real weight, but it generally serves to anchor consumer expectations for a product’s value. (It also gives retailers an easy metric to compare sale prices against.)