1. a person who mounts or gets on something, especially a horse
2. a person who prepares and displays specimens, artwork, or photographs for exhibition
3. a device or structure used to hold or support something in position

Examples

• The experienced mounter gracefully climbed onto the stallion.
• She worked as a professional mounter at the natural history museum.
• The photograph mounter carefully positioned the image in the frame.
• We need a sturdy mounter for the telescope.
• The camera mounter kept the equipment stable during filming.
• The skilled mounter prepared the butterfly collection for display.