multicycle

Century Dictionary and Cyclopedia

1. n. A velocipede or “cycle” with more than three wheels; specifically, a form of velocipede first introduced to public notice in 1887, by a series of experiments at Aldershot in England, to test its value as a vehicle for infantry. It is intended to carry from five to twelve men. It has seven pairs of wheels, six pairs being actuated by twelve men, two men to a pair, the space over the axle between the wheels of the seventh pair being occupied as a baggage-van. The propulsion is performed entirely by the feet of the men, and the vehicle is steered by one man.
2. n. A bicycle designed to carry more than two riders.

Wiktionary

1. n. A kind of bicycle designed to carry more than two riders.
2. n. A velocipede with more than three wheels; specifically, one developed in the 19th century with seven pairs of wheels, capable of carrying five to twelve men but steered by only one.
3. adj. Of or pertaining to more than one cycle.