disc  
noun [ C ] uk/dɪsk/ us/dɪsk/
  (ROUND OBJECT)         
 B2 mainly UK (US usually disk)圆盘,盘状物 
a circular flat object
  The dog's name was engraved on a little metal disc attached to its collar. 狗的名字刻在项圈上吊着的一块金属小圆盘上。 
 B1 (US also disk)唱盘;光盘 
a musical record or a compact disc
  She hopes to top the charts again with her third studio disc.
 A DVD is a five-inch disc that plays video as well as music.
 See also: CD
 - More examples
 - Flatten the pastry into a thin disc with your hands.
 - The sun looked like an orange disc, barely visible through the haze of gas and ash that filled the sky.
 - His greatest hits album consists of 2 discs and over 40 songs.
 - A gold disc is awarded when a million dollars worth of records are sold.
 
  (IN BODY)      
C2 (US also disk)椎间盘 
a small piece of cartilage (= strong body tissue that stretches) between the bones in your back
  I was off work after suffering a ruptured disc in my back.
 - More examples
 - The procedure cannot be used to heal herniated discs.
 - Disc replacement may be a possible treatment for some forms of back pain.
 
See also: disk