decameter, noun_ Structure placed across a flowing body of water to stop the flow, female parent of an animal especially domestic livestock, A barrier against the passage of liquid or loose material, as a rubber sheet used in dentistry to isolate one or more teeth from the rest of the mouth, verb_ To block the flow of water, obstruct with, or as if with, a dam, transitive verb_ To hold back or confine by means of a dam, To close up; obstruct, to keep out by means of a dam