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