but·ton-down (bŭtn-doun′)
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Tweet adj. 1. Having buttons extending down the front from the collar to the waist: a button-down shirt. 2. Fastened down by buttons: a button-down collar. 3. also but·toned-down (bŭtnd-) Conservative, conventional, or unimaginative: "a colorful character in the buttoned-down, dull-gray world of business" (Newsweek). n. A button-down shirt. |
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