Related Clues:

• Zag's pal
• Turn one way before turning the other
• Zig's mate
• Part of a slalom's path
• Veer the other way
• Zig's opposite
• First half of an indirect course?
• Quickly turn back
• Change direction sharply
• Veer back in the other direction
• Turn back sharply
• Change direction suddenly
• -- and zag
• Sudden move
• Half an S-curve