Shape of a Red "stop" Road Sign
This page is the CodyCross answer for the clue below from Casino, Group 280, Puzzle 1 (Controlled Shooting).
Question is: Shape of a Red "stop" Road Sign
and the answer is: OCTAGON
Word Meaning:
OCTAGON — (geometry, also attributively) A polygon with eight sides and eight angles.
Definitions from Wiktionary.