n.
Function: noun
Date: 15th century
1 : an act or instance of mounting specifically : an opportunity to ride a horse in a race
2 : FRAME , SUPPORT : as a : the material (as cardboard) on which a picture is mounted b : a jewelry setting c (1) : an undercarriage or part on which a device (as a motor or an artillery piece) rests in service (2) : an attachment for an accessory d : a hinge, card, or acetate envelope for mounting a stamp e : a glass slide with its accessories on which objects are placed for examination with a microscope
3 : a means of conveyance especially : SADDLE HORSE