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English definition of “needle”

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needle

noun [C] uk   /ˈniː.dl̩/ us  

needle noun [C] (SEWING TOOL)

B2 a thin metal pin, used in sewing, that is pointed at one end and has a hole called an eye at the other end for thread: a needle and thread Here, your eyes are better than mine - could you thread (= put thread through) this needle for me?
See also
a knitting needle
More examples

needle noun [C] (MEDICAL TOOL)

C2 ( also hypodermic needle) a very thin, hollow, pointed piece of metal that is connected to a syringe and used to take blood from the body or to put drugs or medicine in

needle noun [C] (POINTER)

on a compass or measuring device, the thin moving part that points in a particular direction or points to a particular measurement: The needle on a compass always points to magnetic north.

needle noun [C] (LEAF)

a thin, hard, pointed leaf of a pine tree: pine needles

needle noun [C] (MUSIC)

the part of a record player that touches the record as it turns around, usually made of a very hard material, such as a diamond: It sounds like the needle on your record player needs to be replaced.

needle

verb [T] uk   /ˈniː.dl̩/ informal us  
to annoy someone, especially by repeated criticism: His mother was always needling him about getting a job.
(Definition of needle from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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