Too far along in a certain activity to attempt a certain action. For Example: “Jim thought we should kick a field goal, but it was too late in the day for that. Since we were down by 21, we had to try to go for a touchdown.”

To declare the end of a day’s work. For Example: “Alright, I think we got enough orders shipped out today. Let’s call it a day and go get a beer.”

A wild guess. For Example: “The final question was ‘who won the World Cup in 1994?’ I didn’t have any clue, so I just took a shot in the dark and said Spain.”

Ignorant of a certain fact or issue. For Example: “In the debate when the Senator was asked his opinion on nuclear waste disposal, it was clear by his stuttering that he is in the dark on that issue.”

Not fit to be a part of. For Example: “Debra thought she wanted to become a journalist, but after her first week of classes she determined she’s not cut out for that career.”