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

quartern \quar"tern\, n. oe. quarteroun, quartron, f.
   quarteron, the fourth part of a pound, or of a hundred; cf.
   l. quartarius a fourth part, quarter of any measure,
   quartern, gill. see quarter, and cf. quarteron,
   quadroon.
   1. a quarter. specifically:
      a the fourth part of a pint; a gill.
      b the fourth part of a peck, or of a stone 14 ibs..
          1913 webster

   2. a loaf of bread weighing about four pounds; -- called also
      quartern loaf. --simmonds.
      1913 webster
see also:
quarter quarteron quadroon quartern loaf 

[2] : WordNet (r) 2.0

quartern
     n : one of four equal parts; "a quarter of a pound" syn: one-fourth,
          fourth, quarter, fourth part, twenty-five percent
see also:
one-fourth fourth quarter fourth part twenty-five percent 

Quartern >> Q Words
Quartern, definition of term: Quartern
quartern_pag1.html