a railway system that has only one rail instead of two, usually in an elevated position
a series of connected carriages that travel on a railroad, often pulled by a locomotive
(of a train) to travel along a track on wheels, carrying passengers or goods
a steel track on which trains run
standard in type or quality, not different or special in any way
used to form words that relate to concepts or entities that are singular or alone
a machine that uses steam made from boiling water to produce power and make parts move
a device that converts electrical energy into mechanical energy, typically through electromagnetic interactions
to supply with the needed energy to make something work
a period of one hundred years
frequently found, happening, or seen
a large place where planes take off and land, with buildings and facilities for passengers to wait for their flights
a large park, with machines and games that are all related to a single concept, designed for public entertainment
to keep away from or deliberately not do something
(of a place) full of activity or people
positioned or built above ground level
a structure built over a river, road, etc. that enables people or vehicles to go from one side to the other
a long, typically cylindrical piece of wood, metal, or plastic, often used for support, fastening, or structural purposes
an underground railroad system, typically in a big city
to travel or move in a specific manner or direction
indicating that the quantity or count mentioned does not exceed a specified value
(of a space) filled with things or people
to join two or more things together
relating to the way a machine, device, or system functions or is controlled during use
someone who enters a place, such as a building, city, or website, for a particular purpose
