REBEL (chess)
WordNet
adjective
(1) Used by Northerners of Confederate soldiers
"The rebel yell"
noun
(2) A person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)
(3) Someone who exhibits great independence in thought and action
(4) `Johnny' was applied as a nickname for Confederate soldiers by the Federal soldiers in the American Civil War; `greyback' derived from their grey Confederate uniforms
verb
(5) Take part in a rebellion; renounce a former allegiance
(6) Break with established customs