noun

1. a movable framework or solid structure, esp. one that swings on hinges, controlling entrance or exit through an opening in a fence or wall
2. an opening providing passageway through a fence or wall, with or without such a structure; gateway
3. any means of entrance, exit, or access, as any of the numbered exits at an airport terminal
4. a mountain pass
5. a movable barrier, as at a railroad crossing or for controlling the start of a horse race
6. a structure controlling the flow of water, as in a pipe, canal, etc.
7. ☆ a frame in which a saw or saws are set
8. in Alpine racing, an opening between two upright poles through which the skier must pass
9. 1. the total amount of money received in admission prices to a performance or exhibition
   2. the total number of spectators who pay to see such an event
10. Elec.
    1. a circuit with one output and two or more inputs, whose output is energized only when certain input conditions are satisfied
    2. an electrode in some semiconductors, esp. an FET, that controls the flow of current

Etymology: ME < OE gatu, pl. of geat, a gate, akin to OFris jet, Du & ON gat, opening

transitive verb gated gat′ed, gating gat′·ing