Definitions

from The Century Dictionary.

  • Capable of resisting balls from firearms; impenetrable by bullets.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Incapable of being penetrated by balls from firearms; bulletproof.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Incapable of being penetrated by balls from firearms; bulletproof.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

ball +‎ -proof

Examples

  • Rendered ballproof, and protected by an iron cone, and mounted on a four-wheeled carriage, it can be readily moved from place to place or kept on march with an army.

    Steam-Battery

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