#tray  an open receptacle for holding or displaying or serving articles or food
  supertype:  #receptacle  a container that is used to put or keep things in
  subtype:  #alms_dish__alms_tray  a tray for collecting the offering from a congregation
  subtype:  #cafeteria_tray__cafeteriatray  a tray for carrying your food in a cafeteria
  subtype:  #cheeseboard__cheese_tray  tray on which cheeses are served
  subtype:  #icetray  a tray for making cubes of ice in a refrigerator
  subtype:  #inkstand  a tray or stand for writing implements and containers for ink
  subtype:  #salver  a tray (or large plate) for serving food or drinks; usually made of silver
  subtype:  #tea_tray__teatray  a tray that accommodates a tea service
  subtype:  #lazy_Susan__turntable  a revolving tray placed on a dining table

No statement uses or specializes #tray; click here to add one.