Source : Webster's Revised Unabridged Dictionary (1913)

Farfow \Far"fow\, v. t. & i. [imp. & p. p. {Farrowed}; p. pr. &
   vb. n. {Farrowing}.]
   To bring forth (young); -- said only of swine. --Tusser.

Source : WordNet®

farrowing
     n : the production of a litter of pigs [syn: {farrow}]