lung-opener
n.— «Oxford reached a rating of 45 in a 25-stroke lung-opener to the scratch’s 42 and continued to pull out leads in their subsequent work.» —“Rowing: Lightly Forceful” by Christopher Dodd Guardian (U.K.) Mar. 25, 1993. (source: Double-Tongued Dictionary)
Further reading
A flashlight doesn’t flash. It provides a steady beam of light. So why is it called a flashlight? The earliest versions lit up only briefly before the batteries gave out and required a recharge, so they were literally “flash lights...
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...