To encourage, to cheer up.
1856. It ll chirk you up and dew you good to go out into socierty agin.Whitcher, The Widow Bedott Papers, No. 7.
1878. Ef theres a mortal thing I can do to help ye, or chirk ye up, I want to do it, right off.Rose T. Cooke, Happy Dodd, chap. xii.