Definition of pinhole borer in English:

pinhole borer

noun

  • An ambrosia beetle (family "Platypodidae"), specifically the larva, which makes minute round holes in timber.

    • ‘Among the most common of these associated with dead/dying pines in Alabama are southern pine sawyer, ambrosia beetles, and pinhole borers.’
    • ‘Pinhole borers infect only green timber and standing trees, and die out as the wood dries.’