curl
B2Neutral to informal. Formal in mathematical/scientific contexts (curl operator).
Definition
Meaning
To form into a spiral or curved shape.
A thing that is curved, coiled, or spiral in shape, especially a lock of hair; the movement of a curling stone; an exercise in weightlifting; a mathematical operator describing rotation.
Linguistics
Semantic Notes
Denotes both the action of bending and the resulting shape. Often implies a smooth, rounded, or elegant curve. Used literally and metaphorically (e.g., 'curl of a lip' for contempt).
Dialectal Variation
British vs American Usage
Differences
The sport of curling is more culturally prominent in the UK and Canada. The 'curl' in hairdressing is universal.
Connotations
In British English, 'curl up with a book' is a common idiom for cozy reading. In American sports contexts, 'curl' can refer more specifically to a type of route in American football.
Frequency
Comparable frequency, with slight increase in UK due to sport of curling.
Vocabulary
Collocations
Grammar
Valency Patterns
curl (something)curl upcurl around/round somethingcurl into somethingVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “curl up and die (feel deep embarrassment)”
- “curl someone's hair (shock or frighten)”
- “make someone's toes curl (cause acute embarrassment)”
Usage
Context Usage
Business
Rare, except in branding/product names (e.g., 'curl' for a software tool).
Academic
Used in physics/engineering (fluid dynamics) and mathematics (vector calculus).
Everyday
Common for hair, body position (curl up), and light exercise.
Technical
Specific use in computing (cURL, a data transfer tool), mathematics (curl operator ∇×), and sports.
Examples
By Part of Speech
verb
British English
- The cat will curl up on the sofa.
- Her hair curls naturally in the damp air.
- He curled the ball into the top corner of the net.
American English
- The paper started to curl at the edges in the sun.
- She curls her hair every morning with a wand.
- The snake curled around the branch.
adverb
British English
- N/A – 'curl' is not used as a standard adverb. 'Curly' can be used informally ('her hair hangs curly').
American English
- N/A – see British note.
adjective
British English
- Her fringe was styled in a cute, curly-Q shape. (Note: 'curly' is primary adjective; 'curl' as adjective is rare and often hyphenated in compounds like 'curl-defining').
American English
- The old photograph had a tight, curl-edged border.
Examples
By CEFR Level
- The baby's hair has a little curl.
- The cat curls up to sleep.
- She uses an iron to curl her hair for the party.
- A curl of smoke rose from the chimney.
- The gymnast curled her body into a perfect ball during the somersault.
- I love to curl up with a good book on a rainy day.
- The vector field's curl is zero, indicating it is irrotational.
- His dismissive comment made her lip curl in contempt.
Learning
Memory Aids
Mnemonic
Think of a girl with a curl (from the nursery rhyme) right in the middle of her forehead – a perfect spiral shape.
Conceptual Metaphor
CURL IS A DEFENSIVE OR COMFORTING POSTURE ('curl up in a ball'); CURL IS DISDAIN ('curl one's lip').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'карат' (carat).
- The computing tool 'cURL' is a proper name, not a translation of a Russian word.
- Avoid using 'скручивать' for hair – 'завивать' or 'крутить' is more natural for 'to curl hair'.
Common Mistakes
- Incorrect: 'She has a curl hair.' Correct: 'She has curly hair.' or 'She has a curl in her hair.'
- Confusing 'curl' (verb/noun) with 'curve' (more general bend).
Practice
Quiz
In which field is the term 'curl' used as a precise technical operator?
FAQ
Frequently Asked Questions
Yes, 'curly' is the adjective derived from 'curl'. It describes something that has curls or a tendency to form curls.
A wave is a gentle, S-shaped bend, while a curl is a tighter, more defined spiral or ringlet.
Yes. It can describe the shape of smoke, a leaf, a piece of paper, or the path of a ball in sports.
cURL (client URL) is a command-line tool and library for transferring data with URLs. It's pronounced 'see URL' and is named as a play on words.