at
at1 / at/ • prep. 1. expressing location or arrival in a particular place or position: they live at Conway House. ∎ used in speech to indicate the sign @ in electronic mail addresses, separating the address-holder's name from their location.2. expressing the time when an event takes place: the children go to bed at nine o'clock. ∎ denoting a particular period of time: the sea is cooler at night. ∎ denoting the time spent by someone attending an educational institution, a workplace, or their home: at work, at home, or at school.3. denoting a particular point or segment on a scale: prices start at $18. ∎ referring to someone's age: at fourteen he began to work as a mailman.4. expressing a particular state or condition: placed them at a serious disadvantage. ∎ expressing a relationship between an individual and a skill: boxing was the only sport I was any good at.5. expressing the object of a look, gesture, thought, action, or plan: I looked at my watch. ∎ expressing the target of a shot from a weapon: they tore down the main street, firing at anyone in sight. ∎ emphasizing the directing of an action toward a specified object: she clutched at the thin gown.6. expressing the means by which something is done: holding a corrections officer at knifepoint.PHRASES: at allsee all.at firstsee first.at it engaged in some activity, typically a reprehensible one: the guy who faked the Hitler diaries is at it again.at lastsee last1 .at leastsee least.at mostsee most.at oncesee once.at that in addition; furthermore: it was not fog but smoke, and very thick at that.not at allsee not.where it's at inf. the fashionable place, possession, or activity: New York is where it's at.at2 / ät/ • n. a monetary unit of Laos, equal to one hundredth of a kip.