The difference between Needle and Pointer
When used as nouns, needle means a fine, sharp implement usually for piercing such as sewing, or knitting, acupuncture, tattooing, body piercing, medical injections, etc, whereas pointer means anything that points or is used for pointing.
Needle is also verb with the meaning: to pierce with a needle, especially for sewing or acupuncture.
check bellow for the other definitions of Needle and Pointer
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Needle as a noun:
A fine, sharp implement usually for piercing such as sewing, or knitting, acupuncture, tattooing, body piercing, medical injections, etc.
Examples:
"The seamstress threaded the needle to sew on a button."
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Needle as a noun:
Any slender, pointed object resembling a needle, such as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc.
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Needle as a noun:
A fine measurement indicator on a dial or graph, e.g. a compass needle.
Examples:
"The needle on the fuel gauge pointed to empty."
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Needle as a noun:
A sensor for playing phonograph records, a phonograph stylus.
Examples:
"Ziggy bought some diamond needles for his hi-fi phonograph."
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Needle as a noun:
A needle-like leaf found on some conifers.
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Needle as a noun:
A strong beam resting on props, used as a temporary support during building repairs.
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Needle as a noun (informal, usually preceded by {{m, the):
}} The death penalty carried out by lethal injection.
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Needle as a noun (programming, [[PHP]]):
A text string that is searched for within another string.
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Needle as a verb:
To pierce with a needle, especially for sewing or acupuncture.
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Needle as a verb (transitive):
To tease in order to provoke; to poke fun at.
Examples:
"Billy needled his sister incessantly about her pimples."
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Needle as a verb (ambitransitive):
To form, or be formed, in the shape of a needle.
Examples:
"to needle crystals"
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Pointer as a noun:
Anything that points or is used for pointing.
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Pointer as a noun:
A teacher's pointer, pointing stick, a rod with an arrow
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Pointer as a noun:
A needle-like component of a timepiece or measuring device that indicates the time or the current reading of the device.
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Pointer as a noun:
A breed of hunting dog, trained to point out game.
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Pointer as a noun (programming):
A variable that holds the address of a memory location where a value can be stored.
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Pointer as a noun (computing):
An icon that indicates the position of the mouse; a cursor.
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Pointer as a noun (mostly, plural):
A tip, a bit of advice.
Examples:
"The instructor gave me some pointers on writing a good paper."
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Pointer as a noun (in combinations):
Something worth a given number of points.
Examples:
"a ten-pointer"