kink

noun
  1. A twist or curl in something that is usually straight, such as a rope or wire. noun
    The hose had a kink in it, preventing the water from flowing smoothly.
    He spent several minutes trying to work out the kinks in the phone cord.
  2. A flaw or obstacle in a plan, system, or process. noun
    We need to work out the kinks in the new software before the launch.
    There are still a few kinks in the project that need to be addressed.
  3. A peculiar or unusual trait, behavior, or preference, often used to describe a non-conventional sexual interest. noun
    He has a kink for role-playing games.
    Everyone has their own kinks, and it's important to communicate them openly.
  4. To form a sharp twist or curl. verb
    The wire kinked as he tried to straighten it out.
    Her hair tends to kink when it gets wet.