釕  
1. Also seen as "钌" (rǎo).  
2. Used to describe metal decoration of objects. See "釕轡" (liǔ bèi).  
3. A metallic element. Symbol: Ru. Silvery-gray, hard and brittle, sometimes in sponge form or in fragments. Rhodium exists in platinum ore, in very small amounts, and can be used to make decorations, alloys, and more.