What is the meaning of Trig?

True; trusty; trustworthy; faithful.

Safe; secure.

Tight; firm; steady; sound; in good condition or health.

Neat; tidy; trim; spruce; smart.

Active; clever.

A dandy; coxcomb.

Trigonometry.

A trig point.

A stone, block of wood, or anything else, placed under a wheel or barrel to prevent motion; a scotch; a skid.

The mark for players at skittles, etc.

To stop (a wheel, barrel, etc.) by placing something under it; to scotch; to skid.

To fill; to stuff; to cram.

Triglyceride.

a wooden board with a low rim, tray

Source: wiktionary.org