1. a. In or near the area occupied by; in or near the location of: at the market; at our destination. b. In or near the position of: always at my side; at the center of the page.

2. To or toward the direction or location of, especially for a specific purpose: Questions came at us from all sides.

3. Present during; attending: at the dance.

4. Within the interval or span of: at the dinner hour; at a glance.

5. In the state or condition of: at peace with one's conscience.

6. In the activity or field of: skilled at playing chess; good at math.

7. To or using the rate, extent, or amount of; to the point of: at 30 cents a pound; at high speed; at 20 paces; at 350F.

8. On, near, or by the time or age of: at three o'clock; at 72 years of age.

9. On account of; because of: rejoice at a victory.

10. By way of; through: exited at the rear gate.

11. In accord with; following: at my request.

12. Dependent upon: at the mercy of the court.

13. Occupied with: at work.