1. int. (also gee whiz) US colloq. a mild expression of surprise, discovery, etc.
Etymology: perh. abbr. of JESUS 2. int. (often foll. by up) a command to a horse etc., esp. to go faster.
Etymology: 17th c.: orig. unkn. 3. n. US sl. (usu. in pl.) a thousand dollars.
Etymology: the letter G, as initial of GRAND