Definition of jib boom in English:

jib boom

noun

Sailing
  • A spar run out forward as an extension of the bowsprit.

    • ‘That pressure also flows to the slave cylinder to provide additional lifting force to the jib boom.’
    • ‘The 7-ton crane can handle 600 pounds at full extension of the jib boom at 82 feet, or 2500 pounds at 60 feet.’
    • ‘Despite the weather, the ship's two carpenters were busy and by the 26th they were able to replace the jib boom.’
    • ‘Hovering over the jib boom you see two large anchors lying on deck.’
    • ‘She was still scarred after her encounters with icebergs so proper repairs to her jury-rigged jib boom were a top priority.’