dirt Navy
n.— «It appears the new CNO has read it and uses it to justify a “dirt Navy,” a replacement for the on-board Marine detachments that seem to be forming their own force.» —“Re: A Brain Pentagon Wants to Pick” by Jack Linthicum Usenet: sci.military.naval Oct. 22, 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...