kink

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A tight curl, twist, or bend in a length of thin material, as one caused by the tensing of a looped section of wire.
2. n. A painful muscle spasm, as in the neck or back; a crick.
3. n. A difficulty or flaw that is likely to impede operation, as in a plan or system.
4. n. A mental peculiarity; a quirk.
5. n. An unusual or eccentric idea.
6. n. Slang Peculiarity or deviation in sexual behavior or taste.
7. v. To form or cause to form a kink or kinks.

Century Dictionary and Cyclopedia

1. n. A knot-like contraction or curl in a thread, cord, or rope, or in a hair, wire, or chain, resulting from its being twisted or doubled upon itself, or from the nature of the material. Also kinkle.
2. n. An unreasonable and obstinate notion; a crotchet; a whim.
3. To form kinks; twist or contract into knots.
4. To become entangled: said of a line.
5. To laugh loudly.
6. To gasp for breath as in a severe fit of coughing: especially applied to the noisy inspiration of breath in whooping-cough.
7. n. A convulsive fit of coughing or laughter; a sonorous indraft of the breath; the whoop in whooping-cough; a gasping for breath caused by coughing, laughing, or crying.

Wiktionary

1. v. To laugh loudly.
2. v. To gasp for breath as in a severe fit of coughing.
3. n. A convulsive fit of coughing or laughter; a sonorous indraft of breath; a whoop; a gasp of breath caused by laughing, coughing, or crying.
4. n. A tight curl, twist, or bend in a length of thin material, hair etc.
5. n. A difficulty or flaw that is likely to impede operation, as in a plan or system.
6. n. slang Peculiarity or deviation in sexual behaviour or taste.
7. n. Scotland, dialect A fit of coughing or laughter.
8. n. mathematics A positive 1-soliton solution to the Sine–Gordon equation
9. v. transitive To form a kink.
10. v. intransitive To be formed into a kink.

GNU Webster's 1913

1. n. A twist or loop in a rope or thread, caused by a spontaneous doubling or winding upon itself; a close loop or curl; a doubling in a cord.
2. n. colloq. An unreasonable notion; a crotchet; a whim; a caprice.
3. v. To wind into a kink; to knot or twist spontaneously upon itself, as a rope or thread.
4. n. Scot. A fit of coughing; also, a convulsive fit of laughter.

WordNet 3.0

1. v. form a curl, curve, or kink
2. n. a person with unusual sexual tastes
3. n. a difficulty or flaw in a plan or operation
4. n. a painful muscle spasm especially in the neck or back (`rick' and `wrick' are British)
5. n. a sharp bend in a line produced when a line having a loop is pulled tight
6. n. an eccentric idea
7. v. curl tightly