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.
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.tr.1. To prick, pierce, or stitch with a needle.
2. Informal To goad, provoke, or tease.