verb

• (intransitive) To propel oneself rapidly upward, downward and/or in any horizontal direction such that momentum causes the body to become airborne.
  "The boy jumped over a fence."
• (intransitive) To cause oneself to leave an elevated location and fall downward.
  "She is going to jump from the diving board."
• (transitive) To pass by means of a spring or leap; to overleap.
  "to jump a stream"
• (intransitive) To employ a parachute to leave an aircraft or elevated location.

noun

• (mining) A dislocation in a stratum; a fault.
• (architecture) An abrupt interruption of level in a piece of brickwork or masonry.
• (sports, equestrianism) An obstacle that forms part of a showjumping course, and that the horse has to jump over cleanly.
  "Heartless managed the scale the first jump but fell over the second."
• (with on) An early start or an advantage.
  "He got a jump on the day because he had laid out everything the night before."

adv

• (obsolete) Exactly; precisely
  "Thus twice before, and jump at this dead hour, With martial stalk hath he gone by our watch."

adj

• (obsolete) Exact; matched; fitting; precise.
  "jump names"