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Meaning of jack block | Babel Free

Noun CEFR B2

Definitions

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

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

jack boot jack boy jack chain Jack cheese Jack County jack crevalle