What word begins and ends with the letter b?

Answer 1

"Bulb" As in light bulb. Bulb can mean: 1. Botany. a. a usually subterranean and often globular bud having fleshy leaves emergent at the top and a stem reduced to a flat disk, rooting from the underside, as in the onion and lily. b. a plant growing from such a bud. 2. any round, enlarged part, esp. at the end of a cylindrical object: the bulb of a thermometer. 3. Electricity. a. the glass housing, in which a partial vacuum has been established, that contains the filament of an incandescent electric lamp. b. an incandescent or fluorescent electric lamp. 4. Anatomy. any of various small, bulb-shaped structures or protuberances: olfactory bulb; bulb of urethra. 5. medulla oblongata. 6. Building Trades. a rounded thickening at the toe of an angle iron or tee. 7. Nautical. a cylindrical or spherical prominence at the forefoot of certain vessels. 8. Photography. a shutter setting in which the shutter remains open as long as the shutter release is depressed. Symbol:B