Keep something secret or confidential. To avoid revealing information, plans, or details that should remain private or hidden until the appropriate time.
This phrase from the early 1900s comes from the literal practice of wrapping valuable or sensitive items in cloth or paper to protect and conceal them. The 'wraps' provided both physical protection and visual concealment.
The phrase beautifully suggests that secrets need the same careful protection as fragile physical objects. There's something almost tender about 'wrapping' information, as if secrets are delicate things that could be damaged by exposure to light.
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