feather-foil

from WordNet (r) 3.0 (2006)

feather-foil
    n 1: a plant of the genus Hottonia [syn: {featherfoil},
         {feather-foil}]

from The Collaborative International Dictionary of English v.0.48

Feather-foil \Feath"er-foil`\, n. [Feather + foil a leaf.]
   (Bot.)
   An aquatic plant ({Hottonia palustris}), having finely
   divided leaves.
   [1913 Webster]