The Collaborative International Dictionary of English v.0.48:

Trig \Trig\, v. t. [Cf. Dan. trykke to press, Sw. trycka.]
   To fill; to stuff; to cram. [Obs.] --Dr. H. More.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Trig \Trig\, a. [Formerly written trick, akin to trick to
   dress.]
   Full; also, trim; neat. [Prov. Eng. & Scot.]
   [1913 Webster]

         To sit on a horse square and trig.       --Brit. Quart.
                                                  Rev.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Trig \Trig\, v. t. [See Trigger.]
   To stop, as a wheel, by placing something under it; to
   scotch; to skid.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Trig \Trig\, n. [See Trigger.]
   A stone, block of wood, or anything else, placed under a
   wheel or barrel to prevent motion; a scotch; a skid. [Eng.]
   --Wright.
   [1913 Webster]

WordNet (r) 3.0 (2006):

trig
    adj 1: neat and smart in appearance; "a clean-cut and well-bred
           young man"; "the trig corporal in his jaunty cap"; "a
           trim beard" [syn: clean-cut, trig, trim]
    n 1: the mathematics of triangles and trigonometric functions
         [syn: trigonometry, trig]