chætophora

from The Century Dictionary.

• noun In botany, the principal genus of the Chætophoraceæ.
• In zoology, a division of annelids including those which move by means of setigerous feet or parapodia, or by suctorial disks, as the oligochætous and polychætous forms of worms, and the suctorial forms, or leeches. The group is nearly equivalent to the class Annelida in the usual acceptation of that term.