Green’s Dictionary of Slang

(US campus) excellent, worthy of admiration.

1992		Eble Campus Sl. Apr.
1996		Eble Sl. and Sociability 56: The following functionally synonymous slang terms from two school years, 1990–91 and 1991–92, all mean ‘excellent, worthy of approval’: [...] keeva, kegging, kicking, killer.