We found one dictionary that defines the word fall down on sth:

General (1 matching dictionary)

1. fall down on sth: Cambridge Advanced Learner's Dictionary

▸ Words similar to fall down on sth ▸ Usage examples for fall down on sth ▸ Idioms related to fall down on sth ▸ Wikipedia articles (New!) ▸ Words that often appear near fall down on sth ▸ Rhymes of fall down on sth ▸ Invented words related to fall down on sth