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Noun: hornstone  'horn,stown
  1. A fine-grained metamorphic rock formed by the action of heat on clay rocks
    - hornfels

Derived forms: hornstones

Type of: metamorphic rock

Encyclopedia: Hornstone

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Horney
hornfels
horniness
hornist
hornless
hornlike
hornpipe
hornpout
horn-rimmed
horn-shaped
hornstone
hornswoggle
hornwork
hornwort
horny
horny frog
horny layer
horny structure
horologe
horologer
horological