There are 11 words that start with 'cockl'.
| cockle | cockled | cockles | 
| cocklike | cockling | cockloft | 
| cocklebur | cocklofts | cockleburs | 
| cockleshell | cockleshells | |
Note: These 11 words that start with 'cockl' are found from the USA & Canada version of the tournament Scrabble word list.