Definitions for jayhawkerˈdʒeɪˌhɔ kər
Random House Webster's College Dictionary
a native or inhabitant of Kansas (used as a nickname).
Category: Geography (places)
(sometimes l.c.) a plundering marauder, esp. one of the antislavery guerrillas in Kansas and Missouri before and during the Civil War.
Category: American History
Origin of Jayhawker:
1855–60, Amer.; of uncert. orig.
An abolitionist raider in the Kansas-Missouri border skirmishes during the American Civil War
a robber or bandit
a name given to a free-booting, unenlisted, armed man or guerrilla