ebonite
noun
eb·o·nite ˈe-bə-ˌnīt 
: hard rubber especially when black
Example Sentences
Recent Examples on the Web The former features an ebonite feed and an 18-karat gold nib available in a variety of sizes. 
Nancy Olson, Forbes, 13 Sep. 2021
Nancy Olson, Forbes, 13 Sep. 2021 Word History
First Known Use
1861, in the meaning defined above
- circuitousness
- circuitousnesses
- circuitries
- circuitry
- circuits
- circuity
- circuity of action
- circulant
- circular
- circular canal
- circular canon
- circular dichroism
- circular error
- circular file
- circular flow
- circular function
- circular insanity
- circular knitting machine
- circular level
- circular measure
- circular mil
- circular note
- circular pitch
- circular plane
- circular psychosis