There are 13 words that start with 'dros'.
| dross | drosky | drossy | 
| drosera | droshky | drosses | 
| droseras | droskies | drossier | 
| droshkies | drossiest | drosophila | 
| drosophilas | ||
Note: These 13 words that start with 'dros' are found from the USA & Canada version of the tournament Scrabble word list.