kink

A tight curl, twist, or bend in a length of thin material, as one caused by the tensing of a looped section of wire.

A painful muscle spasm, as in the neck or back; a crick.

A difficulty or flaw that is likely to impede operation, as in a plan or system.

A mental peculiarity; a quirk.

An unusual or eccentric idea.

Peculiarity or deviation in sexual behavior or taste.

To form or cause to form a kink or kinks.

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.

An unreasonable and obstinate notion; a crotchet; a whim.

To form kinks; twist or contract into knots.