1. Any of various birds of the family Corvidae having a long tail and black, blue, or green plumage with white markings, and noted for their chattering call, especially Pica hudsonia, of western North America, and P. pica, of Eurasia and Africa. Also called pie2.
2. Any of various birds that resemble the magpie.
3. A person who chatters.
4. One who compulsively collects or hoards small objects.
[Mag, a name used in proverbs about chatterers (a nickname for Margaret) + PIE2.]
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