For a physical object falling:
* la goutte (a drop of liquid)
* la chute (a fall, a drop)
For a decrease or reduction:
* la baisse (a decrease, a drop)
* la chute (a fall, a drop)
For a letter or symbol:
* la lettre (the letter)
* le symbole (the symbol)
In the context of music:
* le drop (the drop)
Here are some examples:
* Une goutte d'eau tombe de la fenêtre. (A drop of water falls from the window.)
* Le prix du pétrole a connu une baisse importante. (The price of oil has experienced a significant drop.)
* La chute de l'Empire romain. (The fall of the Roman Empire.)
* Le drop est arrivé et la foule est devenue folle. (The drop arrived and the crowd went wild.)
Please provide more context if you need a more specific translation.