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.
lambs lams lambies limbs loams lames lamas llamas limbos limbus limbas lamias lums limas limes limos looms lumas ylems lemmas limeys loumas
iambs jambs lambs gambs camos numbs zombis hams camas rumbas llamas kames sambos limbs shams gambas mambas wamus gams rams dumbs gombos maims lamas lames shawms shames wombs umbos tamis dams reams iambus jambes fames combes teams combos names combs hames haems foams bimbos chimbs limbas coombes jams limbos lams dumbos pams bams wames nimbus limbus shamos beams amas gamas mamas roams cames bombs seams ramus tams loams jumbos aims sambas chams kombus gumbos gaums games coombs mambos cams bombes shamus ambos amis amus gambes dames tames tombs whams shamas yams
lamb lambie lamby lam alamo slam lama clammy lame flamy lamia flambee lamiae flambe limb blame limba limbi limby flam llama flambeau loam flame loamy clam limbo glam blam ulama