[1] : The Collaborative International Dictionary of English v.0.48

feck \feck\, n. abbrev. fr. effect.
   1. effect. obs.
      webster 1913 suppl.

   2. efficacy; force; value. scot.  prov. eng.
      webster 1913 suppl.

   3. amount; quantity. scot.  prov. eng.

            he had a feck o' books wi' him.       --r. l.
                                                  stevenson.

   the most feck, or the feck, the greater or larger part.
      "the feck o' my life." --burns.
      webster 1913 suppl.
see also:
the most feck the feck 

Feck >> F Words
Feck, definition of term: Feck
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