The Collaborative International Dictionary of English v.0.48:

Swarf \Swarf\, v. i. [Cf. Swerve.]
   To grow languid; to faint. [Scot.] "To swarf for very
   hunger." --Sir W. Scott.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Swarf \Swarf\, n. [Cf. Swerve.]
   The grit worn away from grindstones in grinding cutlery wet.
   [Prov. Eng.]
   [1913 Webster]