The keyword phrase functions as a noun phrase. The head noun is "token," which is modified by the proper noun "Patriots Day" acting as a noun adjunct or compound adjective. This grammatical structure identifies a specific type of object or concept.
The term refers to an object, either physical or digital, created to commemorate or be associated with the Patriots' Day holiday. In a physical context, this could be a challenge coin, a medallion, a souvenir, or a voucher for an event. In a digital context, it likely refers to a cryptographic asset, such as a Non-Fungible Token (NFT) representing art or a collectible, or a specific cryptocurrency created for a related project or community.
Its precise meaning is determined entirely by the context in which it appears. If found in a numismatic or historical catalog, it denotes a physical collectible. If discussed on a blockchain or financial platform, it signifies a digital asset. The phrase's core function is to classify a specific token by its thematic association with the holiday.