Piciformes

Century Dictionary and Cyclopedia

1. n. In Garrod's classification, a superfamily of anomalogonatous picarian birds, having a tufted oil-gland, one carotid, and no cæca, including the Picidæ and some related families: contrasted with Cypseliformes.
2. n. In Coues's system (1884), the woodpeckers alone as a suborder of Picariæ, composed of the three families Picidæ, Picumnidæ, and Iyngidæ.

Wiktionary

1. n. A taxonomic order within the subclass Neognathae — the woodpeckers, barbets, toucans, jacamars, puffbirds and honeyguides etc.

GNU Webster's 1913

1. n. (Zoöl.) A group of birds including the woodpeckers, toucans, barbets, colies, kingfishes, hornbills, and some other related groups.

WordNet 3.0

1. n. woodpeckers; jacamars; puffbirds; barbets; honey guides; toucans.