Warning sign at a train station's food court? (NOTE: The original sign, without my additions, actually exists. It's in Grand Central Terminal in NYC, on the lower level — the food court level. The sig
redflag
Clue
Sign of danger — sign of socialism
stopahead
Clue
Pre-sign sign
add
Clue
Hyperactivity may be a sign of it, for short
Definition
to compute the sum of
age
Clue
What liver spots may be a sign of
Definition
to grow old
alert
Clue
Sign word that may be followed by an exclamation point
