In popular jargon of the US Marine Corps:

a. a person who rarely exhibits effort and/or responsibility and lets others do all the work; a loafer, slacker, dope-off, weasel; shirker, screw off, malingerer.

b. a person assigned to a comfortable job relative to others in his unit;

c. a short person or a person of slight stature or build;

d. a term sometime used to refer to civilian employees of the Department of Defense or a government contractor.

A feather merchant is a homosexual most often a really ugly or retarded person or animal. (or something else)

a retarded person that is also a homosexual and is extremely ugly and fat.