jigger mast
Also found in: Wikipedia.
Related to jigger mast: mizzenmast, mizzen
jigger mast
n.
1. The short mast located toward the stern on a ketch or yawl, from which the jigger sail is set.
2. The fourth mast aft on a schooner having five or more masts.
3. The aftmost mast on a bark or ship having four or more masts.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.