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Knobby rocksnail was created in 1868.
Long and knobby
Hainan Knobby Newt was created in 1984.
Here is an example sentence with the word "knobby":
The round joints of a horse's knobby knees are hard to draw - even experienced artists can find this challenging!
The spiders do have knobby joints. They u's them to walk when they bend their eight legs