Found 2 items, similar to great-niece.
English → English (WordNet) Definition: great-niece great-niece n : a daughter of your niece or nephew [syn: grandniece]
English → English (gcide) Definition: great-niece great-niece \great-niece\ n. a daughter of one's niece or nephew. Syn: grandniece. [WordNet 1.5]