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.).

2. A loaf of bread weighing about four pounds; -- called also quartern loaf. --Simmonds.

Source: Webster's Revised Unabridged Dictionary (1913)