dam

1 :  a body of water confined by a barrier

2a :  a barrier preventing the flow of water or of loose solid materials (such as soil or snow) a beaver dam an ice dam; especially, civil engineering :  a barrier built across a watercourse for impounding (see impound 2) waterb :  a barrier to check the flow of liquid, gas, or air

1 :  to provide or restrain with a barrier that prevents the flow of water :  to provide or restrain with a dam (see ²dam 2a) dam a river

2 :  to stop up :  block damming up their emotions

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(Carl Peter) Henrik 1895–1976 Danish biochemist

:  the female parent of a domestic animal (as a dog or horse)

:  a barrier (as across a stream) to hold back a flow of water

:  to hold back or block with or as if with a dam Leaves dammed the drains.

:  a female parent—used especially of a domestic animal

:  rubber dam—see dental dam

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