headache beam
n.— «Each set of steel posts holds up another length of steel that spans Weber Street. Warning signs announce the height restriction. If the signs are ignored, trucks that are too tall will hit the steel and, the idea goes, stop before they collide with the formwork. And the name for the trusty crossbar? Engineers call it a “headache beam.”» —“His interest in world affairs never ‘flags’” by Christian Aagaard Kitchener-Waterloo Record (Ontario, Canada) Mar. 29, 1999. (source: Double-Tongued Dictionary)
Further reading
In her book, Canadian English: A Linguistic Reader, University of Toronto professor Elaine Gold writes extensively about the common Canadian discourse tag eh? This word can serve as a confirmation marker, much like the discourse tag right? The word...
Why do southern Californians refer to interstate thoroughfares with the definite article, as in the 405 or the 8? This usage is a result of the history of freeways in Southern California, and is heard in a few other places, including Phoenix...