n An interval of space or time in which one set of events or phenomena is completed.
n A complete rotation of anything.
n A process that returns to its beginning and then repeats itself in the same sequence.
n The members of the sequence formed by such a process.
n (music) In musical set theory, an interval cycle is the set of pitch classes resulting from repeatedly applying the same interval class to the starting pitch class.
n A series of poems, songs or other works of art, typically longer than a trilogy.
n A programme on a washing machine, dishwasher, or other such device.
n A pedal-powered vehicle, such as a unicycle, bicycle, or tricycle, or a motorized vehicle that has either two or three wheels.
n (baseball) A single, a double, a triple, and a home run hit by the same player in the same game.
n (graph theory) A closed walk or path, with or without repeated vertices allowed.
n (topology, algebraic topology) A chain whose boundary is zero.
n An imaginary circle or orbit in the heavens; one of the celestial spheres.
n An age; a long period of time.
n An orderly list for a given time; a calendar.
n (botany) One entire round in a circle or a spire.
n (weaponry) A discharge of a taser.
n (aviation) One take-off and landing of an aircraft, referring to a pressurisation cycle which places stresses on the fuselage.
n (sports) A scheduled period of time of weeks or months wherein a performance-enhancing substance or, by extension, supplement is applied, to be followed by another one where it is not or the dosage is lower.
v To ride a bicycle or other cycle.
v To go through a cycle or to put through a cycle.
v (electronics) To turn power off and back on
v (ice hockey) To maintain a team's possession of the puck in the offensive zone by handling and passing the puck in a loop from the boards near the goal up the side boards and passing to back to the boards near the goal