释义
n.
a broad blade attached to a rotating axis or wheel which pushes or is pushed by wind or water and forms part of a machine or device such as a windmill, propeller, or turbine
（风车、螺旋桨或涡轮机的）翼，叶片，轮叶。
short for
the flat part on either side of the shaft of a feather
羽片。
a broad, flat projecting surface designed to guide the motion of a projectile, such as a feather on an arrow or a fin on a torpedo
箭翎；尾翼，舵。
词源
"late Middle English： dialect variant of obsolete