1. Gun Barrel Noun
بندوق کی نال
A tube through which a bullet travels when a gun is fired.
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Gun a weapon that discharges a missile at high velocity (especially from a metal tube or barrel).
Through (of a route or journey etc.) continuing without requiring stops or changes; "a through street".
Metro Subway Subway System Tube Underground an electric railway operating below the surface of the ground (usually in a city); "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'".
When At what time used interrogatively; "When did I speak ?".
Which interrogatively; "Which matter?".