Wiktionary
construction helmet
n. protective headgear worn by a construction worker; a hard hat.
Usage examples of "construction helmet".
Stillson charged back to the podium, took off his construction helmet, and spun it into the crowd.
Neidelman stood in one corner, a construction helmet on his head, directing the placement of the supports.
He was dressed in a white coat and had a yellow plastic construction helmet on his head.
Then Tony was standing over her, wearing his yellow high-impact construction helmet.