blacklead
/ˈblæk lɛd/
noun
- A dark, soft form of carbon used in pencils and as a lubricant; also called graphite.
- He used blacklead to lubricate the lock so it would turn smoothly.
- The pencil's core is made of blacklead, not actual lead.
- Artists often prefer blacklead for sketching because it leaves a dark, smooth line.
Synonyms