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.
trows tiros trios toros tyros trois troys trews taros torose drowse torous triose drowsy tres tars tors torus tours torso tores toras truss tares tries tiers trays tahrs trees tears terse treys trooz trass tyres tires draws duros torrs trues tarsi dross tress torsi torse trousseau terais tressy terras hydros torahs tarres tories drossy dowries hydrous tarries terries yttrias terrazzo dors drys
arrows prows rows harrows borrows morrows trows brows frows furrows yarrows vrows burrows barrows narrows grows crows sorrows serows marrows farrows parous broos eros giros heros heroes brosy morose guiros ceros crews ferrous porose kaross pareos aurous vireos barrios brose porous burros dross shrews chiros cheerios tyros praos trios torous toros taros hydros drowsy cirrous saros pharos serosa prosy proso brews curios euros faros frowsy pross cirrose rose roes karoos browse karroos gyrose pros craws rosy froes rerose brios cerous braws cross gross pyros raws serous prose zeroes biros drowse zeros morros bros kouros arose proas vrouws trois erose duros draws hydrous tiros torose trews troys charros cheeros churros gyros
trow taro tiro toro trio troy tyro rowdier strow stroy