This is a word from the "British Invasion" in pop music circa 1962. Along with "Groovy" and "Fab". It meant cool and in style and was used by the "Mods" in London.
Noun. 1. A toothed wheel.
2. A group of items used in an activity; equipment.
Verb. 1. To equip with gears. 2. To connect with gears. 3. To adjust so as to satisfy something.
Noun. 1. I'm always grinding the gears in my transmission.
2. Get that fishing gear together.
Verb. 1. Did you gear that machine right?
2. I've geared down the wheels to provide more speed.
3. My magazine is geared toward a young audience.