1. The word "bicycle" is used to refer to a human-powered vehicle that has two wheels, pedals, and a frame. It is commonly known as a bike, and it is a popular mode of transportation and recreational activity worldwide.

2. The word "bicycle" is derived from the Latin word "bi," meaning two, and "cyclus," meaning circle or wheel. The term was first used in English in the mid-19th century. In other languages, the word for bicycle may vary. For example, in French, it is "vélo," in Spanish, it is "bicicleta," and in German, it is "Fahrrad."

3. The development of the bicycle has a long history. The first recognizable bicycles, known as velocipedes, appeared in Europe in the early 19th century. These early bicycles had wooden frames, metal wheels, and were propelled by the rider pushing off the ground with their feet.

4. The modern bicycle, with pedals and a chain-driven system, was invented in the late 19th century. The English inventor John Kemp Starley is often credited with developing the first successful modern bicycle, known as the "Rover." This design laid the foundation for the bicycles we use today.

5. The word "bicycle" is spelled as B-I-C-Y-C-L-E in English. It is important to note the correct spelling to ensure effective communication. Misspelling the word may lead to confusion and misunderstandings.

6. In conclusion, the English word for bicycle is spelled as "bicycle." It is a versatile vehicle used for transportation and recreation. Understanding the history and development of bicycles can enhance our appreciation for this invention.