The Collaborative International Dictionary of English v.0.48:

Suttle \Sut"tle\, n. [Etymol. uncertain.] (Com.)
   The weight when the tare has been deducted, and tret is yet
   to be allowed. --M?Culloch.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Suttle \Sut"tle\, v. i. [See Sutler.]
   To act as sutler; to supply provisions and other articles to
   troops.
   [1913 Webster]