A general term referring to the awareness of fall being in the air; also, an unspeakable association alluding to the fall / autumn season.
Similar to Americana in the way that one cherishes all things Halloween and of autumn. For example, seeing Halloween decorations in Dollar Stores and Wal-Mart in September, noticing the changing of leaves color, watching scary movies, going to Halloween parties, et cetera.
Unfortunately, Halloween(icana) is usually quickly overshadowed by the concentration of the unbelievably marketable and commercial Christmas.
A person who loves Halloween above all holidays. Halloween is their Christmas, Easter, Valentines and St.Patrick's day all-in-one. Of course this person probably dresses mostly in black, could be kinda scary themselves until you get to know them, makes cool props, decorates their yard and home like a haunted house and has no problem coming up with the most creative and original costumes ever to show up at a party.
(Definitely an interesting person to know in my humble opinion!!)