I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
bra braw bora bray brae bura bro bur bar bewray bureau brr burr bore biro bare bury beer brew brie brio bree broo bear brow bier birr byre boar boor buhr brrr beery brugh burgh berry burry barre burro barrio barrow borrow burrow