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3 definitions by NBNoG

 
1.
JCS
Just Common Sense
JCS...duh
by NBNoG May 19, 2009
 
2.
An outpost of understanding/cognizance/warning
Clarke's "The Sentinel"-1948
and "2001"
by NBNoG April 29, 2008
 
3.
JSC
Just Common Sense
JSC...Duh
by NBNoG May 19, 2009