Meaning of easting down

east'ing down'

Pronunciation: [key]
— Naut. Naut.
  1. the passage eastward from the Cape of Good Hope, as made by a sailing ship bound for Australia or the East Indies.
  2. the passage eastward from Australia, as made by a sailing ship bound for Cape Horn.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.