stuffer

1. One who, or that which, stuffs.

   a cushion-stuffer

   a craftsman who stuffs and mounts the skins of animals for display

2. A taxidermist.

3. Something which is stuffed into an enclosure, especially an advertising circular included with other mail.

   an advertising circular that is enclosed with other material and (usually) sent by mail

4. One who conceals a package of illegal drugs by swallowing them.

regular