Unscramble Errfno

What is the meaning of word errfno unscrambled?

What 6 letter words can be made from letters E R R F N O:

Make more words by adding or removing letters

How many 5 letter words can you make from letters E R R F N O?

1. Freon - Definition of Freon

2. frore - Definition of frore

Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter E and unscrambling rrfno
2) Removing the letter R and unscrambling erfno
3) Removing the letter R and unscrambling erfno
4) Removing the letter F and unscrambling errno
5) Removing the letter N and unscrambling errfo
6) Removing the letter O and unscrambling errfn

More anagrams containing the letters E R R F N O
errfon errnfo rneorf rfnroe