keep one's eye in
- (chiefly Britain) To keep in practice.
1906 July 19, Mr. Crooks, The parliamentary debates, volume 161:
- A man must have some work to keep his eye in and his muscles at work.
1968, John Le Carré, A Small Town in Germany, page 29:
- He'd have a beer first, just to keep his eye in; and afterwards he would have a little of the hard stuff.
1981 July, (Please provide the book title or journal name), volume 6, number 6, page 46:
- He went trap-shooting to keep his eye in, out of season