The typographic character @, called the at sign or at symbol, is an abbreviation of the word at or the phrase at the rate of in accounting and commercial invoices (e.g. "7 widgets @ $2 = $14"). Its most common modern use is in e-mail addresses, where it stands for "located at".
connected with or engaged in or sponsored by or used in commerce or commercial enterprises; "commercial trucker"; "commercial TV"; "commercial diamonds"
Concerned with or engaged in commerce
Making or intended to make a profit
Having profit, rather than artistic or other value, as a primary aim
a commercially sponsored ad on radio or television
A space or container from which the air has been completely or partly removed
the absence of matter
A space entirely devoid of matter
A gap left by the loss, death, or departure of someone or something formerly playing a significant part in a situation or activity
clean with a vacuum cleaner; "vacuum the carpets"
void: an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum"
shock: surprise greatly; knock someone's socks off; "I was floored when I heard that I was promoted"
All the rooms or areas on the same level of a building; a story
A level area or space used or designed for a particular activity
the inside lower horizontal surface (as of a room, hallway, tent, or other structure); "they needed rugs to cover the bare floors"; "we spread our sleeping bags on the dry floor of the tent"
The lower surface of a room, on which one may walk
a structure consisting of a room or set of rooms at a single position along a vertical scale; "what level is the office on?"
vacuum
I am known as the killer of all vacuums. I average more than one a year. We just purchased a dyson...we'll lsee how long it lasts!