This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One of the slender, whiskerlike tactile organs extending from the head of certain fishes, such as catfishes. Also called barb1.

n. Any of several Old World freshwater fish of the genus Barbus, especially B. barbus, having four barbels on its upper jaw.

n. A freshwater fish of the genus Barbus.

n. Whisker-like sensory organs, located around the mouth of certain fish, including catfish, carp, goatfish, sturgeon, and some types of shark.

n. A barb or pap under the tongues of horses and cattle.

n. A slender tactile organ on the lips of certain fishes.

n. A large fresh-water fish (Barbus vulgaris) found in many European rivers. Its upper jaw is furnished with four barbels.

n. Barbs or paps under the tongues of horses and cattle. See 1st Barb, 3.

n. The common English name of the fish Barbus vulgaris, also extended to other species of the genus Barbus.

n. A small cylindrical vermiform process appended to the mouth of certain fishes, serving as an organ of touch.

n. A knot of superfluous flesh growing in the channel of a horse's mouth. Also barble and barb.

n. slender tactile process on the jaws of a fish

"It lacks teeth, lacks the chin barbel, has a non-functional gut, and is dark brown rather than black."

tentacle   

barb   

tench    roach    sunfish    gudgeon    crappie    shiner    minnow    catfish    derm    pickerel