chuck it in
To give up or abandon something. This business venture has lost me money the past three years—I think it's time to chuck it in.
chuck it in
Inf. to quit; to give up. (Fixed order.) I was so depressed, I almost chucked it in. If I didn't have to keep the job to pay my bills, I'd have chucked it in long ago.
chuck it in
tv. to quit; to give up. (see also throw in the towel.) If I didn’t have to keep the job to live, I’d have chucked it in long ago.