Definitions for "Hard hat"
Keywords:  helmet, worn, worker, oilfield, brim
n: a hard helmet worn by oilfield workers to minimize the danger of being injured by falling objects.
a worker skilled in building offices or dwellings etc.
a lightweight protective helmet (plastic or metal) worn by construction workers
a good idea because there is always an abundance of low hanging stuff to whack your head on
Hard-shelled headgear with a shock-absorbent interior webbing used to cushion head blows.