|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
informal publication, often simple in format and crisp in style, that provides special information, advice, opinions, and forecasts for a defined audience. Newsletters are ordinarily but not always issued regularly. Common topics covered in newsletters include business and the professions, energy, health, safety, and travel. Corporations often issue newsletters for internal communication with employees, while nonprofit organizations issue them for their members
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