\Zig"zag`\, n. [F. zigzag, G. zickzack, from zacke,
zacken, a dentil, tooth. Cf. {Tack} a small nail.]
1. Something that has short turns or angles.

         The fanatics going straight forward and openly, the
         politicians by the surer mode of zigzag. --Burke.

2. (Arch.) A molding running in a zigzag line; a chevron, or
   series of chevrons. See Illust. of {Chevron}, 3.

3. (Fort.) See {Boyau}.

\Zig"zag`\, a.
Having short, sharp turns; running this way and that in an
onward course.

\Zig"zag`\, v. t. [imp. & p. p. {Zigzagged}; p. pr. & vb.
n. {Zigzagging}.]
To form with short turns.

\Zig"zag`\, v. i.
To move in a zigzag manner; also, to have a zigzag shape.
--R. Browning.