The Collaborative International Dictionary of English v.0.48:

Pici \Pi"ci\ (p[imac]"s[imac]), prop. n. pl. [NL., fr. L. picus
   a woodpecker.] (Zool.)
   A division of birds including the woodpeckers and wrynecks.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Picus \Pi"cus\, n.; pl. Pici. [L., a woodpecker.] (Zool.)
   A genus of woodpeckers, including some of the common American
   and European species.
   [1913 Webster]