Elephant n. : A mammal of the order Proboscidia, of which two living species, Elephas Indicus and E. Africanus, and several fossil species, are known. They have a proboscis or trunk, and two large ivory tusks proceeding from the extremity of the upper jaw, and curving upwards. The molar teeth are large and have transverse folds. Elephants are the largest land animals now existing.

Elephant n. : Ivory; the tusk of the elephant.

Example:
How many Elephant Tusks does it take to make a piano keyboard?

Taxonomy
elephants, tusks, trunk, African elephants, Asian Elephant, ears, species, African, Asian, skin, elephant population, populations, animals, ground, legs, Indian elephants, trees, Elephant tusks.

Defination from the web:
elephant, the largest living land mammal. Includes body characteristics, diet, varieties, harvest, domestication, social behavior, evolution, and more.