from the GNU version of the Collaborative International Dictionary of English
- n. A small dam to prevent free passage of water in an adit or level.
from The Century Dictionary and Cyclopedia
- n. A small temporary dam or partition, made either of branches or twigs interlaced, or perhaps sometimes of a simple piece of board, and used either to check the flow of water under ground or to separate ore from refuse or attle on the surface.
Sorry, no etymologies found.