blue canary n. an emergency worker (especially a police officer or first responder) whose death alerts other personnel to a hazardous situation. Etymological Note: From the use of canaries in coal mines, whose death would alert miners to the presence of dangerous gases. (source: Double-Tongued Dictionary)
Further reading
It was a dark and stormy night. So begins the long and increasingly convoluted prose of Edwards Bulwer-Lytton’s best-known novel. Today the annual Bulwer-Lytton Contest asks contestants for fanciful first sentences that are similarly...
A documentary film called My Beautiful Stutter follows youngsters at a summer camp specifically for stutterers. It’s a place for finding acceptance, support, and confidence for navigating the larger world. And:, “The High Priestess of...
While the word “respondent” does in fact, according to merriam-webster.com mean “one who responds,” I believe it is more common among those in the heroic professions to refer to themselvese as first responders as opposed to first respondents. Though I’m certainly no authority on the subject, I most often hear the word “respondent” in connection with civil proceedings at law or surveys.
I think you’re right. I’ll change the definition accordingly.