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English to English noun
| 1 |
the boundary between the Earth's crust and the underlying mantle |  | Example: the Mohorovicic discontinuity averages 5 miles down under oceans and 20 miles down under continents
source: wordnet30
| 2 |
A gallinule (Notornis Mantelli) formerly inhabiting New Zealand, but now supposed to be extinct. It was incapable of flight. See Notornis. | | source: webster1913
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