There are 15 words that start with 'picka'.
| pickax | pickaxe | pickadil | 
| pickaxed | pickaxes | pickaback | 
| pickadils | pickaroon | pickaxing | 
| pickabacks | pickaninny | pickaroons | 
| pickabacked | pickabacking | pickaninnies | 
Note: These 15 words that start with 'picka' are found from the USA & Canada version of the tournament Scrabble word list.