ZIG - is a valid Scrabble word.
Definition of ZIG:
- one of the sharp turns, angles, or alterations in a zigzag course
- sharp alteration or change of direction (as in a process or policy) the quick zigs and zags of his international maneuverings New York Times
- to change course sharply [v ZIGGED, ZIGGING, ZIGS]
- to move in one of the two directions followed in a zigzag course