Unscramble Libtref

What is the meaning of word libtref unscrambled?

What 7 letter words can be made from letters L I B T R E F:

1. filbert - Definition of filbert

Make more words by adding or removing letters

How many 6 letter words can you make from letters L I B T R E F?

1. filter - Definition of filter

2. lifter - Definition of lifter

3. riblet - Definition of riblet

4. trifle - Definition of trifle

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter L and unscrambling ibtref
2) Removing the letter I and unscrambling lbtref
3) Removing the letter B and unscrambling litref
4) Removing the letter T and unscrambling libref
5) Removing the letter R and unscrambling libtef
6) Removing the letter E and unscrambling libtrf
7) Removing the letter F and unscrambling libtre

More anagrams containing the letters L I B T R E F
libtrfe liebfrt rtbeifl reifltb