1at (used to indicate cost or rate per unit):30 dictionaries @ £29.99 each
informal at (in any sense):he dealt fairly well with tough issues thrown @ himIf you are staying @ a hotel, it will have a laundry service
2used in Internet addresses between the user’s name and the domain name:replaced-emailjscott@oup.com
(in an online discussion, especially on the social media website Twitter) preceding the name of a person to whom a comment is directed:@Oliver: I’m aware of that fact
