| Blue | the color of the clear sky in the daytime |
|---|---|
| Blue | small edible oyster typically from the south shore of Long Island |
| Blue | oysters originally from Long Island Sound but now from anywhere along the northeastern seacoast |
| Blue | photographic print of plans or technical drawings etc. |
| Blue | something intended as a guide for making something else |
| Blue | make a blueprint of |
| Blue | sensitized paper used to make blueprints |
| Blue | a type of folk song that originated among Black Americans at the beginning of the 20th century |
| Blue | an informal term for a state of depression |
| Blue | tall grass with smooth bluish leaf sheaths grown for hay in the United States |
| Blue | valuable forage grass of western United States |
| Blue | a woman having literary or intellectual interests |