'Founder's sand' definitions:

Definition of 'Founder's sand'

From: GCIDE
  • Founder \Found"er\, n. [From Found to cast.] One who founds; one who casts metals in various forms; a caster; as, a founder of cannon, bells, hardware, or types. [1913 Webster]
  • Fonder's dust. Same as Facing, 4.
  • Founder's sand, a kind of sand suitable for purposes of molding. [1913 Webster]