WordReference Random House Unabridged Dictionary of American English © 2025
Jay•hawk•er 
( jā′hô′kər),USA pronunciation n. 
            - Place Namesa native or inhabitant of Kansas (used as a nickname).
 - American History(sometimes l.c.) a plundering marauder, esp. one of the antislavery guerrillas in Kansas, Missouri, and other border states before and during the Civil War.
 
- of uncertain origin, originally 1855–60, American.
 
'Jayhawker' also found in these entries (note: many are not synonyms or translations):