We found 2 dictionaries that define the word drop off the map:

General (1 matching dictionary)

1. drop off the map: Wiktionary

Miscellaneous (1 matching dictionary)

2. drop off the map: Idioms

Definitions from Wiktionary (drop off the map) ▸ verb:  Synonym of drop off the radar ▸ Words similar to drop off the map ▸ Usage examples for drop off the map ▸ Idioms related to drop off the map ▸ Wikipedia articles (New!) ▸ Words that often appear near drop off the map ▸ Rhymes of drop off the map ▸ Invented words related to drop off the map