nounC2Very rare — outside the 30,000 commonest English words, so you will meet it in writing rather than in speechToo rare in one of the two pools to compare — fewer than 20 uses in speech or in writing
A dinosaur with three horns and a wide bony collar.
Definitions of triceratops
1nountriceratopsA dinosaur with three horns and a wide bony collar.C2