There are 19 7-letter words that start with 'bir'.
| birched | birchen | birches | birddog |
| birders | birdied | birdies | birding |
| birdman | birdmen | biremes | biretta |
| biriani | birkies | birlers | birling |
| birring | birthed | biryani | |
Note: These 19 7-letter words that start with 'bir' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with bird, birt, birl, bira, bire, birr, birc, birk, biri, biro, birs, biry.
4-letter words start with 'bir' (5)