名詞 dam:

1. a barrier constructed to contain the flow of water or to keep out the sea
   同義詞：dike, dyke
2. a metric unit of length equal to ten meters
   同義詞：decameter, dekameter, decametre, dekametre, dkm
3. female parent of an animal especially domestic livestock

動(dòng)詞 dam:

1. obstruct with, or as if with, a dam
   同義詞：dam up

1. The dam eventually yielded and collapsed under the weight of water.
   水壩在水的壓力下終於決口。
2. The water deepened after the dam was built.
   堤壩建成後水已加深。
3. The dam was not strong enough to hold back the flood waters.
   水壩不太堅(jiān)固，擋不住洪水。
4. The dam gave way; it was not strong enough to hold the flood waters.
   水壩坍塌了; 它不夠堅(jiān)固，擋不住洪水。
5. The village was swept away when the dam burst.
   村莊在水壩決堤時(shí)被沖走了。

dam

n.（名詞）

A barrier constructed across a waterway to control the flow or raise the level of water.
水壩，堰：被建造橫跨在水域上的障礙物，用來控制水位的漲落
A body of water controlled by such a barrier.
水庫：由水壩或堰控制的水
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：防止液體或松散物質(zhì)的壩狀物，如牙科用的橡皮障，把一顆或幾顆牙齒與口中的其它牙齒隔離開
An obstruction; a hindrance.
障礙物；妨礙物
v.tr.（及物動(dòng)詞）
dammed,dam.ming,dams
To hold back or confine by means of a dam.
用水壩阻止，用水壩限制
To close up; obstruct:
阻塞；抑制：
例句：
He tried to dam his grief.See Synonyms at hinder
他試圖抑制自己的悲傷參見 hinder

來源：
Middle English
中古英語
probably from Old English *damm
可能源自 古英語 *damm

【引伸】
dam.mer
n.（名詞）

---------------另--------------
dam
dam 2

n.（名詞）
Abbr. d.A female parent. Used of a four-legged animal.
縮寫 d.四足母獸：母獸。用于四足獸
Archaic A mother.
【古語】 母親

來源：
Middle English dam, dame [lady, mother] * see dame
中古英語 dam, dame [女士，母親] *參見 dame

dam
dam 3
abbr.（略語）
Decameter.
Decameter.