a) a sign or signal designed to instill caution in its recipient
b) an amazing album by the oh-so-talented band green day
. second only to their most recent album, american idiot.
a) warning: smoking during pregnancy may result in birth defects
b) i don't understand why the "emotional depth" and "pure talent" displayed in american idiot surprised everyone so much, because warning, their previous album, rocked and was definitely a sign of greater things to come.