capstan bar: meaning, definition, pronunciation and examples
C2 (Very Low Frequency / Specialized)Technical / Nautical / Historical
Quick answer
What does “capstan bar” mean?
A long, heavy lever inserted into the head of a capstan (a vertical-axled rotating machine) to turn it manually, typically used on ships to raise anchors or haul heavy loads.
Audio
Pronunciation
Definition
Meaning and Definition
A long, heavy lever inserted into the head of a capstan (a vertical-axled rotating machine) to turn it manually, typically used on ships to raise anchors or haul heavy loads.
In modern contexts, it can refer metaphorically to any lever or tool used to apply rotational force, or to a key component in a mechanical winding system. In computing, it is sometimes used as jargon for a manual override or physical control mechanism in server racks or data centers.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. The term is equally archaic and specialized in both varieties. The object itself is more likely to be referenced in British contexts due to the UK's stronger tradition of preserving and operating historical sailing vessels.
Connotations
Evokes imagery of age-of-sail ships, manual labour, and traditional seamanship. Can connote ruggedness, mechanical simplicity, or a bygone era.
Frequency
Extremely low frequency in general language. Higher frequency only within niche communities: maritime historians, traditional ship restorers, naval architects, and enthusiasts of tall ships.
Grammar
How to Use “capstan bar” in a Sentence
[Sailors] + inserted + [number] + capstan bars + into + [the capstan][The crew] + heaved + on + [the] + capstan bars + to + [verb phrase (e.g., weigh anchor)]Vocabulary
Collocations
Examples
Examples of “capstan bar” in a Sentence
verb
British English
- The sailors capstan-barred the anchor up.
- They needed to capstan-bar the hawser tight.
American English
- The crew capstan-barred the load into position.
- We'll have to capstan-bar it if the motor fails.
adverb
British English
- The anchor was raised capstan-bar slowly.
- They pulled capstan-bar hard on the line.
American English
- They worked capstan-bar for hours.
- The sail was trimmed capstan-bar tight.
adjective
British English
- The capstan-bar mechanism was seized with rust.
- They performed a capstan-bar haul.
American English
- He explained the capstan-bar principle.
- A capstan-bar operation was their last resort.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in historical, maritime, or engineering papers discussing pre-industrial technology.
Everyday
Not used.
Technical
Used in manuals for operating or maintaining historical vessels, in museum displays, and in traditional shipbuilding.
Vocabulary
Synonyms of “capstan bar”
Strong
Neutral
Weak
Vocabulary
Antonyms of “capstan bar”
Watch out
Common Mistakes When Using “capstan bar”
- Confusing it with a 'crowbar' (which is for prying).
- Using it as a general term for any lever.
- Misspelling as 'capstone bar' (a capstone is the top stone of a structure).
FAQ
Frequently Asked Questions
No. A crowbar is a straight iron bar used for prying things open. A capstan bar is a lever inserted into a rotating capstan to turn it, used for winding or lifting.
Primarily on historical sailing ships from the age of sail (e.g., frigates, clippers, tall ships) before the widespread use of steam or hydraulic power. Modern replicas and museum ships also have them.
In highly specialized or jargon use, yes. It means to manually turn a capstan or similar device using bars, or metaphorically to apply strenuous manual effort to a task. This usage is very rare.
Because the technology it describes has been largely obsolete for over a century, replaced by powered winches and hoists. Its use is confined to historical, niche technical, or metaphorical contexts.
A long, heavy lever inserted into the head of a capstan (a vertical-axled rotating machine) to turn it manually, typically used on ships to raise anchors or haul heavy loads.
Capstan bar is usually technical / nautical / historical in register.
Capstan bar: in British English it is pronounced /ˈkæp.stən ˌbɑː/, and in American English it is pronounced /ˈkæp.stən ˌbɑːr/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “To put a capstan bar in it: (rare, nautical slang) To apply manual effort to solve a stubborn problem.”
Learning
Memory Aids
Mnemonic
Imagine a CAPtain STANding on deck, using a BAR to turn the big winch (capstan). CAP-STAN-BAR.
Conceptual Metaphor
A CAPSTAN BAR is LEVERAGE / MANUAL FORCE. It represents the application of direct, physical human effort to move a heavy or resistant system.
Practice
Quiz
In a modern data center, a 'capstan bar' might metaphorically refer to: