The Collaborative International Dictionary of English v.0.48:

Suckle \Suc"kle\, v. t. [imp. & p. p. Suckled; p. pr. & vb. n.
   Suckling.] [Freq. of suck.]
   To give suck to; to nurse at the breast. --Addison.
   [1913 Webster]

         The breasts of Hecuba
         When she did suckle Hector, looked not lovelier.
                                                  --Shak.
   [1913 Webster]

         They are not weak, suckled by Wisdom.    --Landor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

suckled
    adj 1: (of an infant) breast-fed [syn: nursed, suckled]