Iceberg Lettuceâs Risks: Iceberg lettuce is one of the fifty fruits and vegetables with the highest levels of pesticide residue, this according to the Environmental Working Group.
McGuffin is a surname of Irish origin, thought to originate from County Donegal. It is an Anglicized form of the Gaelic Mag Dhuibhfinn. Notable people with the surname include: David McGuffin, Canadian television correspondent; Gary and Joanie McGuffin, Canadian explorers, authors, and conservation photographer
I would say the above definition of MacGuffin is slightly off in the question. It's not always the case that the MacGuffin's true nature isn't identified.. Often times the MacGuffin is clearly identified and simply is not as valuable or interesting to the viewer as it is to a central character. It has little else to do with the story except moving the plot forward.