Merlinburrow burrocks

• Marlborough Barracks: an army barracks in Dublin; now known as McKee Barracks
  • A Finnegans Wake Gazetteer

• Merlin’s Barrow → Merlin was entombed alive in a rock by Morgana La Faye

• borrow → to bite one’s ear → bite at his ear

• burrock: a wicker basket for catching fish

• bullocks → L/R split