FEATHER n.
The lightest weight that can be put on the back of a horse in racing. Youatt. (c) In wrestling, boxing, etc., a term applied to the lightest of the classes into which contestants are divided; -- in contradistinction to light weight, middle weight, and heavy weight. A feather in the cap an honour, trophy, or mark of dis…
FLY n.
A heavy wheel, or cross arms with weights at the ends on a revolving axis, to regulate or equalize the motion of machinery by means of its inertia, where the power communicated, or the resistance to be overcome, is variable, as in the steam engine or the coining press. See Fly wheel (below).