Unscramble Libref

What is the meaning of word libref unscrambled?

What 6 letter words can be made from letters L I B R E F:

Make more words by adding or removing letters

How many 5 letter words can you make from letters L I B R E F?

1. birle - Definition of birle

2. brief - Definition of brief

3. fiber - Definition of fiber

4. fibre - Definition of fibre

5. filer - Definition of filer

6. flier - Definition of flier

7. liber - Definition of liber

8. lifer - Definition of lifer

9. rifle - Definition of rifle

Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter L and unscrambling ibref
2) Removing the letter I and unscrambling lbref
3) Removing the letter B and unscrambling liref
4) Removing the letter R and unscrambling libef
5) Removing the letter E and unscrambling librf
6) Removing the letter F and unscrambling libre

More anagrams containing the letters L I B R E F
librfe liebfr ferbli rebfli