pachyderm

Any of various large, thick-skinned, hoofed mammals such as the elephant, rhinoceros, or hippopotamus.

Thick-skinned, as a member of the Pachydermata. Also pachydermal, pachydermatous, pachydermous.

A non-ruminant hoofed quadruped; any member of the old order Pachydermata.

Any of various nonruminant hoofed mammals having very thick skin, including the elephant, rhinoceros, and hippopotamus, one of the Pachydermata.

Someone (or something) with thick skin. It is used for animals such as an elephant or a hippopotamus.

A member of the obsolete taxonomic group Pachydermata, grouping of thick-skinned, hoofed animals such as the rhinoceros, hippopotamus, elephant, pig and horse.

An elephant

A person that is not affected by (does not care about) what others say about him or her.

Someone who is insensitive.

any of various nonruminant hoofed mammals having very thick skin: elephant; rhinoceros; hippopotamus