Arnoux's beaked whale
noun
Ar·noux's beaked whale
är-ˈnüz-
: an uncommon beaked whale (Berardius arnuxii) of temperate to subpolar waters of the southern hemisphere that has four teeth in the lower jaw and is closely related to Baird's beaked whale
called also southern four-toothed whale
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Merriam-Webster unabridged
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