Are pork cutlets pig nuts

Don't know where that reference comes from. I just tried to find out what they were because they're referenced by the monstrous character Caliban in Shakespeare's THE TEMPEST ("I'll dig thee pig nuts...") and by Long John Silver in Robert Louis Stevenson's TREASURE ISLAND. Apparently they're hickory nuts. So are pecans. But pig nuts are usually bitter and left on the ground for pigs to eat. Supposedly squirrels will leave them alone.