The name Gyeongin refers to the SeoulâÂÂIncheon corridor in South Korea, and is used as a name for the Gyeongin railway line, the Gyeongin Expressway, and the Gyeongin Canal (which was completed in 2011 and is now called the Arabaetgil Canal), all of which link SeoulâÂÂthe South Korean capital and largest cityâÂÂto nearby IncheonâÂÂthe second-largest port and fourth-largest city. The name "Gyeongin" is formed from the character meaning capital city and the first character"Incheon."