Definition of "goin"

I see they was goin, so I said:-- "My week-minded and misgided femails, hold your hosses a minnit, until an old statesman, who has served his country for 4 yeer as Gustise of the Peece, says a few remarks to you."

1870, Various, Punchinello, Vol. II., No. 34, November 19, 1870‎

Youre goin on fit to raise the street." "

1905, George Bernard Shaw, The Irrational Knot‎

Now I got nothing goin on but a fockin ping-pong tournament with Kurt Cobain, who fockin cheats, man, like it's gonna do him any fockin good.

1994 April 29, Michael Dolan, “Nixon in Hell”, in Chicago Reader‎