We found 5 dictionaries that define the word how long is a piece of string:

General (4 matching dictionaries)

1. how long is a piece of string: Merriam-Webster
2. how long is a piece of string: Wiktionary
3. how long is a piece of string: Longman Dictionary of Contemporary English

Miscellaneous (1 matching dictionary)

4. How long is a piece of string: Idioms

▸ Words similar to how long is a piece of string ▸ Usage examples for how long is a piece of string ▸ Idioms related to how long is a piece of string ▸ Wikipedia articles (New!) ▸ Words that often appear near how long is a piece of string ▸ Rhymes of how long is a piece of string ▸ Invented words related to how long is a piece of string