nivorybilllarge black-and-white woodpecker of southern United States and Cuba having an ivory bill; nearly extinct
Webster's Revised Unabridged Dictionary
nivorybill(Zoöl) A large, handsome, black-and-white North American woodpecker (Campephilus principalis), having a large, sharp, ivory-colored beak. Its general color is glossy black, with white secondaries, and a white dorsal stripe. The male has a large, scarlet crest. It is now rare, and found only in the Gulf States and Cuba.
Century Dictionary and Cyclopedia
nivorybillThe ivory-billed woodpecker, Campophilus principalis: so called from the ivory-like hardness and whiteness of the bill. See cut under Campophilus. Coues.
Units of meaning such as “the ivorybil led woodpecker ” are split in an incorrect way, wrongly increasing the number of matching tokens used for computing recall scores.
Improving Update Summarization by Revisiting the MMR Criterion