- A barrier constructed across a waterway to control the flow or raise the level of water.水坝，堰：被建造横跨在水域上的障碍物，用来控制水位的涨落
- A body of water controlled by such a barrier.水库：由水坝或堰控制的水
- 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.橡皮障：防止液体或松散物质的坝状物，如牙科用的橡皮障，把一颗或几颗牙齿与口中的其它牙齿隔离开
- An obstruction; a hindrance.障碍物；妨碍物
- To hold back or confine by means of a dam.用水坝阻止，用水坝限制
- To close up; obstruct:阻塞；抑制：He tried to dam his grief.See Synonyms at hinder 1他试图抑制自己的悲伤 参见 hinder1
- Middle English 中古英语
- probably from Old English *damm 可能源自 古英语 *damm
dam
- Abbr. d.A female parent. Used of a four-legged animal.缩写 d.四足母兽：母兽。用于四足兽
- Archaic A mother.【古语】 母亲
- Middle English dam, dame [lady, mother] * see dame 中古英语 dam, dame [女士，母亲] * 参见 dame
dam
- Decameter. Decameter.