Source : Webster's Revised Unabridged Dictionary (1913)

Crow's-foot \Crow's"-foot`\ (kr?z"f??t`), n.; pl. {Crow's-feet}
   (-f[=e]t`).
   1. pl. The wrinkles that appear, as the effect of age or
      dissipation, under and around the outer corners of the
      eyes. --Tennyson.

   2. (Mil.) A caltrop. [Written also {crowfoot}.]

   3. (Arch.) Same as {Bird's-mouth}. [U.S.]