a number related events happening in a regularly repeated order
bicycle; motor cycle, etc.
ride a bicycle
"the never-ending cycle of the seasons"
"Schubert's song cycles"
"a cycle of reprisal and retaliation"
"a year constitutes a cycle of the seasons"
"cycle the laundry in this washing program"
"This machine automatically cycles"
Better fifty years of Europe than a cycle of Cathay.
If the cycle of nine days holds good then we shall have the Professor at his worst to-night.
出自： Conan Doyle