bullock block
Học thuậtThân thiện
Definition
Noun: A bullock block is a specific type of pulley block. It is a heavy-duty pulley mounted at the head (the top) of a topmast on a sailing ship. Its primary function is to change the direction of a rope or cable (a tackle) used for hoisting or controlling heavy weights, such as yards or cargo.
Usage
The term bullock block is a technical, historical nautical term. It is used specifically in the context of traditional sailing ship rigging and equipment. * It refers to the pulley's fixed location (at the top of a topmast). * It refers to the pulley's function within a larger system of ropes and tackles for lifting.
Examples
- The sailors ran the heavy lift tackle through the bullock block at the topmast head.
- Replacing the worn bullock block was essential before hoisting the new yard.
- The diagram shows the rigging leading from the deck up to the bullock block.
Advanced Usage
- The term is almost exclusively found in historical texts, technical manuals on sailing ship rigging, and maritime archaeology.
- It is a compound noun where "bullock" historically implies strength or heaviness, and "block" is the standard term for a pulley in nautical contexts.
Variants and Related Words
- Pulley block (n): The general term for a pulley mounted in a case. A bullock block is a type of pulley block.
- Block (n): In nautical terminology, the common shortened form for any pulley block.
- Sheave (n): The grooved wheel inside a block over which the rope runs.
- Tackle (n): The system of ropes and blocks used for hoisting.
Synonyms
- Topmast head block: A descriptive synonym indicating its location.
- Heavy lift block: A functional synonym describing its purpose.
Notes
There are no specific phrasal verbs or idioms associated with the isolated term bullock block. It is a fixed technical noun.
Noun
- a pulley-block at the head of a topmast