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dolphin a mammal that lives in the water. Dolphins look like large fish but they breathe air. They have teeth and a snout that looks like a beak. Most kinds of dolphins live in the ocean. A few kinds live in large rivers in Asia and South America. Dolphins are closely related to porpoises and other toothed whales.
domain the land owned or under the control of a single ruler or government. [2 definitions]
dome a rounded roof or ceiling on a room or building.
domestic of or related to the home or family. [3 definitions]
domesticate to tame.
dominant most powerful; ruling or controlling. [2 definitions]
dominate to control by the use of power; rule. [2 definitions]
Dominica an island country in the West Indies. The capital of Dominica is Roseau.
Dominican Republic a country on an island in the West Indies in the Caribbean Sea. Santo Domingo is the capital of the Dominican Republic. The Dominican Republic shares the island with the country of Haiti.
dominion the power or authority to rule or control. [2 definitions]
Dominion Day see Canada Day.
domino1 one of a set of small, flat game pieces shaped like rectangles, each having a different number of dots on its face. [2 definitions]
don2 to put on; dress oneself in.
donate to give in order to help a charity or other group.
donation the act or an instance of giving or donating. [2 definitions]
done past participle of do1. [3 definitions]
done for (informal) dying or dead; near death.
done in (informal) very tired; worn out.
donkey a mammal with hooves that is closely related to the horse. Donkeys are smaller than horses and have longer ears. They are sturdy animals used for riding and carrying loads.
donor one who gives, contributes, or donates something. [2 definitions]
don't shortened form of "do not."