drogue
Concise Oxford English Dictionary © 2008 Oxford University Press:
drogue /drəʊg/
▶noun a device, typically conical or funnel-shaped, towed behind a boat, aircraft, etc., especially to reduce speed or improve stability.
– origin C18 (orig. denoting a board attached to a harpoon line, used to slow down or mark the position of a whale): perh. rel. to drag.
'drogue' also found in these Oxford entries:

