a hinged barrier used to close an opening in a wall, fence, or hedge
noun
Examples:
• Please close the gate behind you when you leave the garden.
• The old wooden gate creaked as she pushed it open.
a designated area in an airport terminal where passengers board their aircraft
noun
Examples:
• Passengers for flight 302 should proceed to gate 12.
• We waited at the gate for two hours before our delayed flight finally boarded.