| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a chattering or flighty, light-headed person. |
-blast suff.
An immature, embryonic stage in the development of cells or tissues: erythroblast.
blast definition
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full blast definition
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full blast
Also, at full blast. At full power, with great energy; also, as loud as possible. For example, The committee is working full blast on the plans, or The fanfare featured the trumpets at full blast. This expression transfers the strong currents of air used in furnaces to anything being done at full power. [Late 1700s]