If you direct somebody, you tell them where to go or what to do. You can also direct a play or direct someone to a gas station, by telling them what roads to take.
Most uses of direct involving giving orders. Army officers direct battles, which means they plan what to do and how to carry it out. You can direct a kick toward the goal, which means you send the ball flying toward the net. When used as an adjective, direct often means to the point with no beating around the bush. If someone is direct, it means they say what they mean; if a plant is in direct sunlight, it gets a lot of sun.