1. Cover with graphite
   "They blacklead the mould to prevent the casting from sticking"

1. Used as a lubricant and as a moderator in nuclear reactors
   "Black lead is commonly used in pencils";
   - graphite, plumbago

Derived forms: black leads, blackleaded, blackleads, blackleading

Type of: atomic number 6, C, carbon, cover

Encyclopedia: Blacklead