Definition of "at" [at]

• In or near the area occupied by; in or near the location of: at the market; at our destination. (preposition)
• In or near the position of: always at my side; at the center of the page. (preposition)
• To or toward the direction or location of, especially for a specific purpose: Questions came at us from all sides. (preposition)
• Present during; attending: at the dance. (preposition)
• Within the interval or span of: at the dinner hour; at a glance. (preposition)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "  Similarly, while regularly knocking off Afghan civilians at checkpoints on their roads and in their homes,  at their celebrations and at work, we ignore the fact that our invasion and occupation opened the way for the transformation of Afghanistan into the first all-drug-crop agricultural nation and so the planet's premier narco-nation."
• "If you want to email it, I'm at scrocker1946 **at**"
• "Those of us who regret the lack of respect paid the great American writers of classical detective fiction will be delighted at the latest addition to a prestigious literary reprint series: Jacques Futrelle, author of the classic "The Problem of Cell 13," whose place in mystery history would be even greater had he not died in the sinking of the _Titanic _at age 37."