black_lead
1. [ noun ] (chemistry) used as a lubricant and as a moderator in nuclear reactors
Synonyms: graphite plumbago
Related terms: carbon pencil lead
Similar spelling:   blacklead
  black_hole
  black_whale
  black_calla
  black_lovage
  black_letter
  Blackledge
  black_lung
  bleakly
  Blackwelder
  black_elder
  black_sally
  black_olive
  black_larch
  black_hills
  Blackley
  blackleg
  Bleakley
  black_willow
  black_lotion
  black_locust
  block_letter
  Blacklock
  Blackwell