or jig·ger mast
Examples from the Web for jiggermast
Margaret was in high spirits, and her laughter vied with the clang of the jiggermast.
Behind the jiggermast I lighted the fuse of one of my extemporized bombs.
The Elsinore drifts idly on an idle sea, and we stand regular watches in the shelter of chart-house and jiggermast.