We found one dictionary that defines the word a list as long as arm:

Miscellaneous (1 matching dictionary)

1. a list as long as arm: Idioms

▸ Words similar to a list as long as arm ▸ Usage examples for a list as long as arm ▸ Idioms related to a list as long as arm ▸ Wikipedia articles (New!) ▸ Words that often appear near a list as long as arm ▸ Rhymes of a list as long as arm ▸ Invented words related to a list as long as arm