- A backward-facing point on a Fishing Hook or similar implement, rendering extraction from the victim's flesh more difficult
- Barb (feather) , the branches issuing from the rachis of feathers
- Barb (fish) , several species of freshwater fish
- Barb (horse) , a breed from North Africa
- Barb (pigeon) , a breed of Domestic Pigeon
- BARB , the Broadcasters' Audience Research Board
- Barb, a shortened version of the name Barbara
- Barding or barb, a type of armor for horses
- Australian Kelpie or barb, a breed of dog
- Barbiturate are drugs that act as a depressant for the Central Nervous System
- USS Barb , the name of two submarines of the US Navy
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