hard hat

noun

noun

A helmet, usually made from rigid plastic, used on construction sites to protect the head from falling objects.

My enthusiasm wasn't exactly suppressed - my father had worked for British Rail's property department, and one of my earliest memories was walking around the forlorn buildings at Old Oak Common depot wearing his oversized BR hard hat.2020 May 6, Tim Dunn, “The Architecture The Railways Built”, in Rail, page 72:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.