Here's what rhymes with gastrulae.
re lay ray yea allay ley rei lei rea roue they may day way away say pay play j array bay clay gay gray grey k pray che hay nay prey weigh ballet tray fay fe fray slay valet dey fillet hey sei sleigh whey drei jay kc payee puree rj tae tre wei bey bray dray flay neigh brae cay fey fibulae shay soubriquet trey aurae hurray aweigh copulae stay today delay survey decay essay obey holiday okay spray betray cafe portray repay stray sway astray oj defray faraway ij lamellae ok overlay papillae passe bj bk dossier fj nebulae replay tj underlay zwei parquet scapulae sobriquet soiree belay castaway filet splay airplay byplay moray pleurae prepay purvey sachet stowaway hooray urethrae briquet layaway reweigh spay umbrae tearaway display convey dismay formulae runaway underway vertebrae attache bouquet cliche disarray disobey protege sequelae emigre francais saute alleyway breakaway crochet croquet fistulae risque souffle straightaway wordplay cabriolet caraway hideaway inveigh ricochet throwaway nisei patellae resurvey sorbet stingray toupee flyaway noway overpay overplay medullae outplay underpay uvulae bobsleigh copay foldaway respray anyway everyday yesterday halfway interplay passageway waterway cabaret gangway naturae toothache getaway lingerie maxillae workaday giveaway salmonellae takeaway underplay macrame overstay roundelay sickbay caesurae outstay cybercafe misplay penumbrae walkaway naivete matinee microarray societe trabeculae carriageway caravanserais tarantulae communique companionway