The Collaborative International Dictionary of English v.0.48:

harvest-lice \harvest-lice\ n.
   An erect perennial Old World herb (Agrimonia eupatoria) of
   dry grassy habitats.

   Syn: Agrimonia eupatoria.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Agrimony \Ag"ri*mo*ny\, n. [OE. agremoyne, OF. aigremoine, L.
   agrimonia for argemonia, fr. Gr. ?.] (Bot.)
   (a) A genus of plants of the Rose family.
   (b) The name is also given to various other plants; as, hemp
       agrimony (Eupatorium cannabinum); water agrimony
       (Bidens).
       [1913 Webster]

   Note: The Agrimonia eupatoria, or common agrimony, a
         perennial herb with a spike of yellow flowers, was once
         esteemed as a medical remedy, but is now seldom used.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Egremoin \Eg"re*moin\, n. [See Agrimony.]
   Agrimony (Agrimonia Eupatoria). [Obs.] --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Agrimonia eupatoria
    n 1: erect perennial Old World herb of dry grassy habitats [syn:
         harvest-lice, Agrimonia eupatoria]