Unscramble Operin

What is the meaning of word operin unscrambled?

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

1. orpine - Definition of orpine

2. pernio - Definition of pernio

Make more words by adding or removing letters

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

1. irone - Definition of irone

2. opine - Definition of opine

3. orpin - Definition of orpin

4. Peron - Definition of Peron

5. prion - Definition of prion

6. prone - Definition of prone

7. repin - Definition of repin

8. ripen - Definition of ripen

Which 5 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter O and unscrambling perin
2) Removing the letter P and unscrambling oerin
3) Removing the letter E and unscrambling oprin
4) Removing the letter R and unscrambling opein
5) Removing the letter I and unscrambling opern
6) Removing the letter N and unscrambling operi

More anagrams containing the letters O P E R I N
operni opienr orpien oerpni