Unscramble Ixref

What is the meaning of word ixref unscrambled?

What 5 letter words can be made from letters I X R E F:

1. fixer - Definition of fixer

2. refix - Definition of refix

Make more words by adding or removing letters

How many 4 letter words can you make from letters I X R E F?

1. fire - Definition of fire

2. reif - Definition of reif

3. rife - Definition of rife

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling xref
2) Removing the letter X and unscrambling iref
3) Removing the letter R and unscrambling ixef
4) Removing the letter E and unscrambling ixrf
5) Removing the letter F and unscrambling ixre

More anagrams containing the letters I X R E F
ixrfe refix rfiex ixerf