by

عَنْ طَرِيق \ by: (showing how sth. is done): We travel by land (or by car). We did that by mistake. We learn by experience. We earn money by working. care of: (often written c/o) at the address of: Write to me c/o the George Hotel. through: by means of; as a result of: I heard the news through a friend. He lost his way through having no map. via: by way of; passing through: We flew from London to Geneva via Paris.