Unscramble Rpfm

What is the meaning of word rpfm unscrambled?

What 4 letter words can be made from letters R P F M:

Make more words by adding or removing letters

How many 3 letter words can you make from letters R P F M?

1. rpm - Definition of rpm

Which 3 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter R and unscrambling pfm
2) Removing the letter P and unscrambling rfm
3) Removing the letter F and unscrambling rpm
4) Removing the letter M and unscrambling rpf

More anagrams containing the letters R P F M
rpmf fmpr pfrm mprf