(1):

(n.) Any common domestic pigeon.

(2):

(n.) One who duffs cattle, etc.

(3):

(n.) A peddler or hawker, especially of cheap, flashy articles, as sham jewelry; hence, a sham or cheat.

(4):

(n.) See Shicer.

(5):

(n.) A stupid, awkward, inefficient person.