noun
: a shark of the family Hexanchidae ; especially : a large shark ( Hexanchus griseus ) having six gill openings on each side and being widely distributed in warm and temperate seas
noun
: a shark of the family Hexanchidae ; especially : a large shark ( Hexanchus griseus ) having six gill openings on each side and being widely distributed in warm and temperate seas
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012