We found 2 dictionaries that define the word observation balloons:

General (2 matching dictionaries)

1. observation balloons: Collins English Dictionary
2. Observation balloons: Wikipedia, the Free Encyclopedia

▸ Words similar to observation balloons ▸ Usage examples for observation balloons ▸ Idioms related to observation balloons ▸ Wikipedia articles (New!) ▸ Words that often appear near observation balloons ▸ Rhymes of observation balloons ▸ Invented words related to observation balloons