Jail; prison: These days, the Gray Bar Motel is a synonym for ”the bucket,” which means jail
[1990s+ Los Angeles police; said to have been the name of the Lincoln Heights police station; a place displaying gray prison bars; earlier terms like Graybar Hotel and Graystone College are found by the 1930s]
[grey-beerd] /ˈgreɪˌbɪərd/ noun 1. Sometimes Disparaging. a man whose beard is gray; old man; sage. 2. . noun A very senior pilot (1970s+ Airline)
noun 1. a small, bushy birch, Betula populifolia, of stony or sandy areas of the eastern U.S., having grayish-white bark and triangular leaves.
noun, Physics. 1. any body that emits radiation at each wavelength in a constant ratio less than unity to that emitted by a black body at the same temperature.
noun, Photography. 1. a card of controlled reflectance held near a subject to approximate middle tones and used as a target for an exposure meter.