Definition of "dromond"

the great dromond swinging from the quay

1868-1870, William Morris, The Earthly Paradise

The name of the ship was Dawn Treader. She was only a little bit of a thing compared with one of our ships, or even with the cogs, dromonds, carracks and galleons which Narnia had owned when Lucy and Edmund had reigned there under Peter as the High King, for nearly all navigation had died out in the reigns of Caspian's ancestors.

1952, C. S. Lewis, The Voyage of the Dawn Treader