dam
1 (dăm)
[Middle English.]
noun
- A barrier constructed across a waterway to control the flow or raise the level of water.
- A body of water controlled by such a barrier.
- 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.
- An obstruction; a hindrance.
transitive verb: dammed, dam·ming, dams.
- To hold back or confine by means of a dam.
- To close up; obstruct: He tried to dam his grief. See synonyms at hinder1
derivatives
- daḿmer
- noun
dam
2 (dăm)
[Middle English dam, dame, lady, mother; see dame.]
noun
- A female parent. Used of a four-legged animal.
- Archaic A mother.
dam3
abbreviation
- decameter
dec·a·me·ter
or dek·a·me·ter
(dĕḱə-mḗtər)
noun
- A metric unit of length equal to 10 meters.