castor: meaning, definition, pronunciation and examples
C1Technical (furniture/hardware); formal/scientific (zoology/botany); culinary.
Quick answer
What does “castor” mean?
A small wheel attached to the bottom of furniture to allow it to move easily.
Audio
Pronunciation
Definition
Meaning and Definition
A small wheel attached to the bottom of furniture to allow it to move easily.
A container for pepper or other condiments (caster); a genus of beaver (Castor) or its fur; Castor oil (derived from the castor bean plant).
Dialectal Variation
British vs American Usage
Differences
The spelling 'castor' for the furniture wheel and the oil is standard in both. For the sugar or condiment shaker, UK uses 'caster sugar' (fine-grained), US more often 'superfine sugar', but 'caster' as a term for the shaker itself is UK.
Connotations
In UK, 'castor' in furniture context is standard; 'caster' is an accepted variant. 'Castor oil' carries strong medicinal connotations.
Frequency
More frequent in UK English due to 'caster sugar' usage. In US, primarily encountered in 'castor oil' and furniture contexts.
Grammar
How to Use “castor” in a Sentence
fit (sth) with castorsmount on castorsroll on castorsVocabulary
Collocations
Examples
Examples of “castor” in a Sentence
verb
British English
- We need to castor this heavy cabinet.
American English
- The workbench was castored for mobility.
adjective
British English
- A castor-mounted display unit.
American English
- The castor assembly is made of nylon.
Usage
Meaning in Context
Business
Used in furniture manufacturing and retail specifications.
Academic
In biology (genus Castor), pharmacology (castor oil properties).
Everyday
Discussing moving furniture, using castor oil as a remedy.
Technical
Engineering specifications for load-bearing swivel mechanisms.
Watch out
Common Mistakes When Using “castor”
- Confusing 'castor' (wheel/oil) with 'caster' (UK for shaker/sugar). Misspelling as 'caster' in all contexts.
- Using 'castor' as a verb (to castor) is rare/non-standard.
FAQ
Frequently Asked Questions
'Castor' is the standard spelling for the wheel and the oil. 'Caster' is a common variant, especially in UK English for the wheel and for the fine sugar/shaker. In US English, 'castor' is more consistent for oil/wheel.
It is a mid-frequency word, more common in specific domains (furniture, traditional medicine, baking) than in general daily conversation.
It is possible but very rare and technical (meaning 'to fit with castors'). It is not recommended for general use.
Traditionally as a laxative, but also in cosmetics, soaps, and as an industrial lubricant or component in biofuels.
A small wheel attached to the bottom of furniture to allow it to move easily.
Castor is usually technical (furniture/hardware); formal/scientific (zoology/botany); culinary. in register.
Castor: in British English it is pronounced /ˈkɑːstə/, and in American English it is pronounced /ˈkæstər/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Like a sofa on castors (very easy to move)”
Learning
Memory Aids
Mnemonic
CASTOR wheels CAST furniture ORdinarily.
Conceptual Metaphor
MOBILITY IS EASE (castors enable easy movement).
Practice
Quiz
In which context is 'castor' LEAST likely to be used?