Click

Origin of: Click

Click

The word dates from the early 17th century and is imitative of the sound of a clock or the cocking of a gun. Its modern meaning to strike up a rapport or understanding dates from the early 20th century and the allusion is to mechanical devices clicking or switching on in unison. Since the 1970s, click is also American slang for a kilometre and is thought to derive from the click of a trip meter in an automobile. More recently, from the 1980s click activates PC commands as in right click, double click etc.