| sheet anchor | |
| —n | |
| 1. | nautical a large strong anchor for use in emergency |
| 2. | a person or thing to be relied upon in an emergency |
| [C17: from earlier shute anker, from shoot (obsolete) the sheet of a sail] | |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a fool or simpleton; ninny. |