0 the hard yellowish-white substance that forms the tusks of some animals such as elephants, used especially in the past to make decorative objects -- 象牙
The items concerned— about 20 in number—are nineteenth century copies of seventeenth century ivories.
To protect the elephant, trade in ivory has been banned since 1990.
His ivory tower has always been equipped with a high-speed elevator.
Even the ivory towers of academia were affected.
A thorough search in the early evening failed to show any ivory gulls at all.
The observations of ivory gulls at sea presented here are consistent with this.
In contrast, no ivory gulls were observed near this community in 2002.
Of the four bears seen during the 1993 cruise, three had ivory gulls associated with them.
