: a barrier preventing the flow of water or of loose solid materials (such as soil or snow)
: a barrier to check the flow of liquid, gas, or air
: a body of water confined by a barrier
: to provide or restrain with a barrier that prevents the flow of water : to provide or restrain with a dam (see 1dam 1a)
: to stop up : block
: the female parent of an animal and especially of a domestic animal
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