I. |brevə̇|rästrə̇n, -äˌstrīn adjective
Etymology: brevi- + Latin rostr um beak + English -ine — more at rostrum
: of, relating to, or being any of several extinct Old World Pliocene and Pleistocene mastodons with much-shortened jaws and complex grinding teeth
II. noun
( -s )
: a brevirostrine animal