Road Perforation
This page is the CodyCross answer for the clue below from Science Lab, Group 319, Puzzle 4 (Alcohol Lamp).
Question is: Road Perforation
and the answer is: POTHOLE
Word Meaning:
POTHOLE — A shallow pit or other edged depression in a road's surface, especially when caused by erosion by weather or traffic.
Definitions from Wiktionary.