There are 17 words that start with 'cocka'.
| cockade | cockaded | cockades | 
| cockapoo | cockatoo | cockamamy | 
| cockapoos | cockateel | cockatiel | 
| cockatoos | cockalorum | cockamamie | 
| cockateels | cockatiels | cockatrice | 
| cockalorums | cockatrices | |
Note: These 17 words that start with 'cocka' are found from the USA & Canada version of the tournament Scrabble word list.