Origin of jack staff
Examples from the Web for jack staff
Don't appear to be any night-hawk on the jack-staff—it's the Amaranth, dead sure!The Gilded Age, Complete|Mark Twain and Charles Dudley Warner
You marked each one's jack-staff, that rose mast high from the unseen prow, and behind it the boiler deck, high over the boilers.Gideon's Band|George W. Cable
That night a fog rolled up from the swamps, and in the morning jack-staff was hid from pilot-house.The Crisis, Complete|Winston Churchill
Close at hand was a jack-staff upholding an American ensign.
The Captain of the transport, his face purple with passion, was rushing towards the jack-staff.