The Collaborative International Dictionary of English v.0.48:

Freckle \Freck"le\ (fr[e^]k"k'l), n. [Dim., from the same root
   as freak, v. t.]
   1. A small yellowish or brownish spot in the skin,
      particularly on the face, neck, or hands.
      [1913 Webster]

   2. Any small spot or discoloration.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Freckle \Frec"kle\, v. t. [imp. & p. p. Freckled
   (fr[e^]k"k'ld); p. pr. & vb. n. Freckling
   (fr[e^]k"kl[i^]ng).]
   To sprinkle or mark with freckles or small discolored spots;
   to spot.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Freckle \Frec"kle\ (fr[e^]k"k'l), v. i.
   To become covered or marked with freckles; to be spotted.
   [1913 Webster]

WordNet (r) 3.0 (2006):

freckle
    n 1: a small brownish spot (of the pigment melanin) on the skin
         [syn: freckle, lentigo]
    v 1: become freckled; "I freckle easily"
    2: mark with freckles