Definitions of click:

• noun:   depression of a button on a computer mouse

  Example: "A click on the right button for example"

• noun:   a stop consonant made by the suction of air into the mouth (as in Bantu)
• noun:   a short light metallic sound
• noun:   a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
• verb:   make a clicking or ticking sound
• verb:   become clear or enter one's consciousness or emotions
• verb:   produce a click

  Example: "Xhosa speakers click"

• verb:   click repeatedly or uncontrollably
• verb:   make a clucking sounds, characteristic of hens
• verb:   cause to make a snapping sound
• verb:   move or strike with a noise

  Example: "He clicked on the light"

• name:  A surname (rare: 1 in 33333 families; popularity rank in the U.S.: #4253)