Unscramble Xfsr

What is the meaning of word xfsr unscrambled?

What 4 letter words can be made from letters X F S R:

Make more words by adding or removing letters

How many 3 letter words can you make from letters X F S R?

1. FRS - Definition of FRS

Which 3 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter X and unscrambling fsr
2) Removing the letter F and unscrambling xsr
3) Removing the letter S and unscrambling xfr
4) Removing the letter R and unscrambling xfs

More anagrams containing the letters X F S R
xrfs xrsf sfrx fsrx