The only black mark was the failure to bring my luggage to my room after I had arrived.

"Was that the only mark you ever saw on her?"

It became very important to me, like my only mark of identity.

The only distinctive mark he seemed to bear was inside, in the things that he knew.

The only mark on the door of his tomb, do ya.

The double point (:) is the only mark of punctuation.

That was not the only mark that the portfolio left.

In his job evaluation report of her performance, the only poor mark is entered under modesty.

The only distinctive mark among them is their religion and language.

The only mark upon it was the number 13, carved in the center of one side.