1a hard creamy-white substance composing the main part of the tusks of an elephant, walrus, or narwhal, often (especially formerly) used to make ornaments and other articles: [as modifier]:a dagger with an ivory handle
[count noun] an object made of ivory.
(the ivories) informal the keys of a piano:Derek tinkled the ivories for us
(ivories) informal a person’s teeth.
2the creamy-white colour of ivory: [as modifier]:an ivory silk blouse
Middle English: from Anglo-Norman French ivurie, based on Latin ebur