Here's what rhymes with kastro.
gastro Words that almost rhyme with kastro
arrow alto canto agro facto macro alfo anno barrow tanto ammo ano campo harrow quanto aloe basso callow lasso scarecrow matzo panto shadow shallow fallow fiasco mango tallow banjo salvo cilantro hallow tango mallow backhoe hallo wacko bandeaux nacho piano commando ticktacktoe tobacco intaglio gazpacho overshadow foreshadow fandango