资料来源 : pyDict

帽边的缎带,服丧时帽子上的黑带

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Hatband \Hat"band`\, n.
   A band round the crown of a hat; sometimes, a band of black
   cloth, crape, etc., worn as a badge of mourning.

资料来源 : WordNet®

hatband
     n : a band around the crown of a hat just above the brim