Word.ws English Dictionary

3-1-1

3-1-1 proper noun: a restriction on air travel in the United States, such that passengers may carry liquids on board as long as they are in 3.4-ounce containers that fit in a single 1-quart bag. Also the alternative form of 311.

Proper noun

3-1-1

  1. (US, colloquial) A restriction on air travel in the United States, such that passengers may carry liquids on board as long as they are in 3.4-ounce containers that fit in a single 1-quart bag.
    • The requirement for passengers to take their shoes off at TSA security checkpoints came nearly five years later due to “intelligence pointing to a continuing threat,” an official TSA history notes, following a foiled August 2006 terrorist plot to detonate liquid explosives onboard transatlantic...2025 July 8, Pete Muntean and Alexandra Skores, “TSA will no longer require all passengers to take shoes off at airport security checkpoints”, in CNN

Also used as

3-1-1 is also the alternative form of 311.

Questions about 3-1-1

What does 3-1-1 mean?
3-1-1 means a restriction on air travel in the United States, such that passengers may carry liquids on board as long as they are in 3.4-ounce containers that fit in a single 1-quart bag.
What part of speech is 3-1-1?
3-1-1 is a proper noun.

Words near 3-1-1 in the dictionary

  1. 3 episode rule
  2. 3 John
  3. 3 Kgs
  4. 3 Kings
  5. 3 Lions
  6. 3-1-1
  7. 3-1-3
  8. 3-2-1
  9. 3-3-3 rule
  10. 3-card monte
  11. 3-clause

Source and license

Adapted from Wiktionary: 3-1-1 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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