(adv)
(of quantities) imprecise but fairlyclose to correct; "lasted approximately an hour"; "in justabout a minute"; "he's about 30 years old"; "I've had about all I can stand"; "we meetaboutonce a month"; "some fortypeople came"; "weighs around a hundred pounds"; "roughly $3,000"; "holds 3 gallons, more or less"; "20 or so people were at the party"