Bicing is a term that refers to a public bicycle-sharing system in Barcelona. If you're looking to describe a similar system in your own city, you might use the following synonyms: bike sharing, bike rental, bike scheme, or public bike system. Other related terms might include dockless bikes, e-bikes, or pedal-assist bicycles. Depending on the specific features of the system you're describing, you might also use terms like cycle hire or bike hire. Ultimately, whatever terminology you choose, the important thing is to make sure your audience understands the concept and benefits of a system that makes bicycles more accessible and convenient for everyone.