Definitions of pressure:

• noun:   a force that compels

  Example: "The public brought pressure to bear on the government"

• noun:   the somatic sensation of pressure

  Example: "The sensitivity of his skin to pressure and temperature was normal"

• noun:   the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)

  Example: "The compressed gas exerts an increased pressure"

• noun:   an oppressive condition of physical or mental or social or economic distress
• noun:   the act of pressing; the exertion of pressure

  Example: "He used pressure to stop the bleeding"

• noun:   the state of urgently demanding notice or attention
• verb:   exert pressure on someone through threats
• verb:   to cause to do through pressure or necessity, by physical, moral or intellectual means :"She forced him to take a job in the city"