Mass. Gen. Laws ch. 93 § 14L
The following words as used in this section and in sections fourteen M to fourteen R, inclusive, shall, unless the context otherwise requires, have the following meanings:
"Trading stamp", any stamp or similar device issued in connection with the retail sale of merchandise or service, as a cash discount or for any other marketing purpose, which entitles the rightful holder, on its due presentation for redemption, to receive merchandise, service or cash. This term, however, shall not mean any redeemable device used by the manufacturer or packer of an article in advertising or selling it, or any redeemable device issued and redeemed by a newspaper, magazine or other publication.
"Trading stamp company", any person engaged in distributing trading stamps for retail issuance by others, or in redeeming trading stamps for retailers, in any way or under any guise.
Mass. Gen. Laws ch. 93, § 14L