The word packer is a noun. Packer means (1) a hiker who wears a backpack, (2) a wholesaler in the meat-packing business, (3) a workman employed to pack things into containers.
The following articles and web pages elaborate on the word packer.
John Packer are international designers, manufacturers and suppliers of woodwind and brass musical instruments to the trade and retail industries. Their instruments have a strong reputation among wind instrument players for their innovative design enhancements.
Visit this meat packers retailer directory to locate retail meat packers in the United States. The photograph on this web page depicts several meat carcasses in a meat locker.