There are 17 words that start with 'backh'.
| backhoe | backhand | backhaul | 
| backhoed | backhoes | backhands | 
| backhauls | backhouse | backhanded | 
| backhander | backhauled | backhoeing | 
| backhouses | backhanders | backhanding | 
| backhauling | backhandedly | |
Note: These 17 words that start with 'backh' are found from the USA & Canada version of the tournament Scrabble word list.