Green’s Dictionary of Slang

1. (US black) a synon. for cool adj. (1)

1993

J. Mowry Six Out Seven (1994) 17: Cool, chill, ice, fuck all that, man!

2. (US black) a synon. for cool adj. (3)

1979

‘Iceberg Slim’ Airtight Willie and Me 81: You don’t need to run down hearts and flowers to a stoned ice player.

3. (N.Z.) perfectly clean.

2003

McGill Reed Dict. of N.Z. Sl.