Englishgreat-grandchildnounMeaningThe child (son or daughter) of one's grandchild.Related wordsgreatgrandchild(English)great-great-grandson(English)great-grandson(English)grandchild(English)great-granddaughter(English)great-great-granddaughter(English)great-grandkid(English)grandson(English)SourcesDictionaryAPI.dev English dictionary data