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1.
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.
by a TRUE green day fan November 25, 2004
90 57
 
2.
an awesome green day song that has a catchy beat; the premise of the song is simple- society is living in fear and worry, and not living their lives with any excitement
This is a public service announcement, This is only a test,
Emergency evacuation protest,
May impair your ability to operate machinery,
Cant quite tell just what it means to me,
Keep out of reach of children,
Don't you talk to strangers,
Get your philosophy from a bumper sticker,
Warning, live without warning
I said warning live, without warning
by GreenDayIsTheBest April 16, 2004
75 66
 
3.
A suggestion; not meant to be taken seriously.
A sign that says "WARNING: ice ahead." Means there is probably not ice ahead, and you shouldn't worry about it.
by Lania Blake June 27, 2010
16 14