primer

/ˈpraɪmər/
noun
  1. A first coat of paint applied to a surface to prepare it for the final coat.
    • Make sure the primer is dry before you add the topcoat.
    • Before painting the wall, she applied a coat of primer to cover the dark color.
    • The carpenter used a wood primer to seal the raw lumber.
  2. A book that gives basic instruction on a subject; an introductory textbook.
    • The 'Primer on Economics' helped him understand supply and demand.
    • She bought a Spanish primer to learn the basics before her trip.
    • The teacher handed out a primer on grammar to the new students.
  3. A small device or substance used to ignite an explosive charge, such as in a gun or firework.
    • The soldier checked the primer on his rifle before firing.
    • Fireworks contain a primer that ignites the main powder.
    • The old pistol's primer was too corroded to work.
Antonyms
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