Found 2 items, similar to granduncle.
English → English (WordNet) Definition: granduncle granduncle n : an uncle of your father or mother [syn: great-uncle]
English → English (gcide) Definition: Granduncle Granduncle \Grand“un”cle\, n. [Cf. F. grand-oncle.] A father's or mother's uncle. [1913 Webster]