Here's what rhymes with omasum.
opossum possum blossom Words that almost rhyme with omasum
caution cation soften rosin herniation libation precaution microcosm macrocosm tryptophan calumniation bottom column solemn forum mortem balsam dorsum bonum nostrum foursome carom boredom quorum condom sorghum rostrum wampum flotsam slalom cockscomb problem quantum decorum drachm metronome stardom thraldom thralldom postpartum gastronome sugarplum falciparum