3-1-1
n.— «The key point is that, in carry-on bags, each traveler is allowed no containers of liquids and gels larger than 3 ounces; everything must fit in a single one-quart bag; and there can be only one such bag per person. (The TSA shorthand for this is 3-1-1).» —“Editor’s notebook” The Capital (Annapolis, Maryland) Nov. 20, 2006. (source: Double-Tongued Dictionary)
Further reading
The owner of a Berlin, Maryland, produce stand wants to know: When a customer is buying four ears of corn, should they say I have four corn or I have four ears of corn? Corn is a mass noun that can also be counted as a plural, just as we might say I...
Katie in Everett, Washington, is curious about the expression If ifs and ands were pots and pans, there’d be no need for tinkers. What is a tinker? She heard this phrase on the television series The Gilded Age, in response to a character who...