n. 雷龙(古生物)

[ noun ]
huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
<noun.animal>

Brontosaurus \Bron`to*sau"rus\, n. [NL., fr. Gr. bronth` thunder
+ say^ros lizard.] (Paleon.)
A genus of large sauropod American dinosaurs of the jurassic
era, or an individual of that genus. A length of sixty feet
is believed to have been attained by these reptiles. The
genus is also called {Apatosaurus}, and individuals of the
genus are also called {brontosaurs}.
[1913 Webster +PJC] ||

brontosaur \bron`to*saur"\, n. [NL., fr. Gr. bronth` thunder +
say^ros lizard.] (Paleon.)
a dinosaur of the genus {Brontosaurus}; an individual may
also be called a {brontosaurus} or an {apatosaurus}.
[PJC] ||