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.
burrs burros burs burrows birrs burse bursa buras buhrs bourrees barres bursae bourse buries burghs bureaus bros bras barrios bars bris berries barrows borrows brios byres brows braes boors brose birse bears brews bries beers bores brass boras brees biers biros brays bares boars briss braws broos brosy boreas braise brassy browse brughs bruise hybris bewrays brassie
burrs durrs currs murrs churrs purrs burs houris buhrs sierras orris purse ours furs suers myrrhs morros bursa sours gnarrs errs murres knurs knaurs feuars sieurs lures bourse course yirrs sherris churros chirres charros urus tours terras burse kurus ruers mures duras nurse dorrs duros surras kauris pours parrs buras sirras guars purs dures cirrus hours tarres burros cures aures carrs kouros durras gharris fours gaurs euros birrs auras pursy lours arras morris lauras gurus derris suras douras auris curs puris arris barres curse muras chirrs torrs ursa queuers whirrs charrs murras giaours shirrs yours
burr burry burrow burro brr bur bura borrow birr burgh bureau berry buhr brrr bourree barrow barrio barre bury