We found 2 dictionaries that define the word dont know arse from elbow:

General (1 matching dictionary)

1. don't know arse from elbow: TheFreeDictionary.com

Miscellaneous (1 matching dictionary)

2. don't know arse from elbow: Idioms

▸ Words similar to dont know arse from elbow ▸ Usage examples for dont know arse from elbow ▸ Idioms related to dont know arse from elbow ▸ Wikipedia articles (New!) ▸ Words that often appear near dont know arse from elbow ▸ Rhymes of dont know arse from elbow ▸ Invented words related to dont know arse from elbow