[Petrosius]

I can’t find sacerd in any dictionary.

Try Bosworth-Toller Anglo-Saxon Dictionary:

sacerd es; m.

A priest (the terns is not confined to the Christian priesthood)

As I said, its use dropped out of English and so cannot be found in modern English dictionaries.

[RnMomof7]

Try Bosworth-Toller Anglo-Saxon Dictionary:

LOL...you had to dig deep to find this ...this is the use of the word "sacred" as it would refer to a priest...THIS IS NOT A DEFINITION OF PRIEST.. There is no definition given for priest

[editor-surveyor]

Sorry, no!

Sacerd is not found in that dictionary. (or any other that I can find.