1. a person who inserts something
2. a device or tool used to insert something

Examples

• The mail inserter worked quickly to stuff envelopes with promotional materials.
• She used a contact lens inserter to help place the lens in her eye.
• The factory hired several inserters to place components into the assembly line.
• The coin inserter on the vending machine was broken.
• He bought a pill inserter to help his elderly mother take her medication.
• The inserter carefully placed the microchip into the circuit board.