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A close companion or comrade.
informal a close friend or follower who accompanies another on adventures, etc
1. a close friend.
2. a confederate or assistant.
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|Noun||1.||sidekick - a close friend who accompanies his buddies in their activities|
cobber - Australian term for a pal
friend - a person you know well and regard with affection and trust; "he was my best friend at the university"