We found 4 dictionaries that define the word as thick as two planks:

General (1 matching dictionary)

1. as thick as two planks: TheFreeDictionary.com

Business (1 matching dictionary)

2. as thick as two planks: Legal dictionary

Medicine (1 matching dictionary)

3. as thick as two planks: Medical dictionary

Miscellaneous (1 matching dictionary)

4. as thick as two planks: Idioms

Phrases: as thick as two short planks, more... ▸ Words similar to as thick as two planks ▸ Usage examples for as thick as two planks ▸ Idioms related to as thick as two planks ▸ Wikipedia articles (New!) ▸ Words that often appear near as thick as two planks ▸ Rhymes of as thick as two planks ▸ Invented words related to as thick as two planks