There are 9 words that start with 'pinea'.
| pineal | pineals | 
| pineapple | pineapples | 
| pinealectomy | pinealectomies | 
| pinealectomize | pinealectomized | 
| pinealectomizes | |
Note: These 9 words that start with 'pinea' are found from the USA & Canada version of the tournament Scrabble word list.