Meaning of seajack

sea•jack

Pronunciation: (sē'jak"), [key]
— n.
  1. the hijacking of a ship, esp. one that occurs while the vessel is under way.
—v.t.
  1. to hijack (a ship) while at sea.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.