(music) movement from the frog to the tip on the bow of a stringed instrument

A room, especially in a hotel, that is designed for two people and has two single beds (sometimes called a twin room) or one double bed.

Alternative form of double exposure

(photography) A photograph produced by exposing film or some other photosensitive surface to focused light twice, usually by opening and closing a camera shutter two times, thereby generating a picture consisting of two superimposed images.

A puppy; a young dog.

(rare) plural of double-u

A dog trained to use its sense of smell to locate traces of accelerant at sites of a suspected arson.

A specialized form of police dog; trained to use its sense of smell to detect and locate evidence of illicit substances, from illegal drugs to explosives materials, which may be carried on a person in their effects.

A detection dog trained to use its sense of smell to locate illicit substances, such as drugs, which may be carried on a person in their effects.

Any dog bred, trained or used for the purpose of attacking a target, either on command or on sight; trained either as a specialized form of police dog or a security force dog.