jack blocks

A form of jack block — A block fixed in the topgallant or royal rigging, used for raising and lowering light masts and spars.

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Meanings

noun
  1. pluralplural of jack block
Cite this entry
APA

jack blocks. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/jack%20blocks

MLA

“jack blocks.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/jack%20blocks. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “jack blocks,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/jack%20blocks.

Source: jack blocks on Wiktionary, CC BY-SA 4.0.