Unscramble Irrbf

What is the meaning of word irrbf unscrambled?

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

Make more words by adding or removing letters

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

1. birr - Definition of birr

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling rrbf
2) Removing the letter R and unscrambling irbf
3) Removing the letter R and unscrambling irbf
4) Removing the letter B and unscrambling irrf
5) Removing the letter F and unscrambling irrb

More anagrams containing the letters I R R B F
irrfb rbfir frirb frrbi