knocker

definition: a device (usually metal and ornamental) attached by a hinge to a door
example:
speech part: noun
synonyms: doorknocker rapper
definition: either of two soft fleshy milk-secreting glandular organs on the chest of a woman
example:
speech part: noun
synonyms: boob
definition: one who disparages or belittles the worth of something
example:
speech part: noun
synonyms: detractor disparager depreciator
definition: a person who knocks (as seeking to gain admittance)
example: open the door and see who the knocker is
speech part: noun
synonyms:
definition: (Yiddish) a big shot who knows it and acts that way
example:
speech part: noun
synonyms:

How knocker is being used?