the GNU version of the Collaborative International Dictionary of English
n. The kestrel; -- called also windbibber, windcuffer, windfanner.
The Century Dictionary and Cyclopedia
n. A kind of hawk, the kestrel, Falco tinunculus or Tinnunculus alaudarius: so called from its hovering in the face of the wind. See kestrel. Also called windbibber, windcuffer, windfanner, windhawk, windsucker, vanner-hawk, staniel, etc.
Word Usage
"This beautiful picture of a flying kestrel, or windhover, is courtesy of the folks at Stanford University: www. stanford.edu/~petelat1/kestrel. jpg"