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nee·dle (nēdl)
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n.
1.
a. A slender, pointed implement used for sewing or surgical suturing, made usually of polished steel and having an eye at one end through which a length of thread is passed and held.
b. Any of various similar implements, such as a fine sharp-pointed instrument used in acupuncture or a pointed shaft used in knitting, crocheting, or lace making.
c. A sharp-pointed instrument used in engraving.
2. A slender piece of jewel or steel used to transmit vibrations from the grooves of a phonograph record.
3.
a. A slender pointer or indicator on a dial, scale, or similar part of a mechanical device.
b. A magnetic needle.
4.
a. A hypodermic needle.
b. Informal A hypodermic injection; a shot.
5. Chiefly Upper Northern US See dragonfly.
6. A narrow stiff leaf, as of a pine or fir.
7. A fine, sharp projection, as a spine of a sea urchin or a crystal.
8.
a. A tall narrow rock formation.
b. An obelisk.
9. Informal A goading, provoking, or teasing remark or act.
v. nee·dled, nee·dling, nee·dles
v.tr.
1. To prick, pierce, or stitch with a needle.
2. Informal To goad, provoke, or tease.
v.intr.
To sew or do similar work with a needle.

[Middle English nedle, from Old English nǣdl; see (s)nē- in the Appendix of Indo-European roots.]

needler n.
(click for a larger image)
needle
left to right: sailmaking, sewing machine, and tapestry needles
bottom right: spring needle

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

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