noun (n)

• a funnel-shaped device towed as a target by an airplane(noun.communication)

  source: wordnet30
• a truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind(noun.communication)

  Synonym:
  air sock, air-sleeve, sock, wind cone, wind sleeve, wind sock, windsock
  

  source: wordnet30
• restraint consisting of a canvas covered frame that floats behind a vessel; prevents drifting or maintains the heading into a wind(noun.artifact)

  Synonym:
  sea anchor
  

  source: wordnet30
• a parachute used to decelerate an object that is moving rapidly(noun.artifact)

  Synonym:
  drogue chute, drogue parachute
  

  source: wordnet30
• See Drag, n., 6, and Drag sail, under Drag, n.(noun)

  source: webster1913