unfeather

== English == === Etymology === From un- +‎ feather. === Verb === unfeather (third-person singular simple present unfeathers, present participle unfeathering, simple past and past participle unfeathered) To strip of feathers. (aviation) To disengage the controls that rotate the blades of a propeller perpendicular to the axis of the propeller. === References === “unfeather”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.