From The Collaborative International Dictionary of English v.0.48 [gcide]:
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]
From The Collaborative International Dictionary of English v.0.48 [gcide]: 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]