diplodocus
Concise Oxford English Dictionary © 2008 Oxford University Press:
diplodocus /dɪˈplɒdəkəs, ˌdɪplə(ʊ)ˈdəʊkəs/
▶noun a huge herbivorous dinosaur of the late Jurassic period, with a long, slender neck and tail.
'diplodocus' also found in these Oxford entries:

