Definition
To swing and miss at a pitch.
How People Actually Use It
a loose term used by college students (usually via text) to either ask if they can come over to anothers apartment or dorm for a short amount of time to see whats up. or to convey an undefined amount of time as to when he/she will arrive.
"(text MSG) Bill: whats good? John: chilln at my place drinking some beers. U? Bill: just finishing up some hwk.. care if i swing through? John: thats str8"
Source: Urban Dictionary