chase the red line
v. phr.— «In swimming parlance, chasing the red line means going for a world record.» —“Phelps, team earn gold, U.S. record in 800 relay” by Kevin Van Valkenburg Baltimore Sun (Md.) July 30, 2005. (source: Double-Tongued Dictionary)
Further reading
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...
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...