DICT.TW Dictionary Taiwan

 half-mast /-ˈmæst/
 半旗(ad.)半旗(vt.)下半旗

 Half-mast n. A point some distance below the top of a mast or staff; as, a flag a half-mast (a token of mourning, etc.).
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 half-mast
      n : a position some distance below the top of the mast to which
          a flag is lowered in mourning or to signal distress