snake dance

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A ceremonial dance of the Hopi in which the dancers traditionally carry live snakes in their mouths.
• noun A procession of people who join hands and move forward in a zigzag line.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a group advancing in a single-file serpentine path
• noun a ceremonial dance (as by the Hopi) in which snakes are handled or invoked