kink

Concise Oxford English Dictionary © 2008 Oxford University Press:
kink/kɪŋk/

▶noun

• 1 a sharp twist or curve in something linear.

  ■ a flaw or obstacle in a plan or operation.

  ■ a quirk of character or behaviour.

• 2 N. Amer. a crick in the neck.

▶verb form or cause to form a kink.

– origin C17: from Mid. Low Ger. kinke, prob. from Du. kinken ‘to kink’.