1. (Yiddish) a big shot who knows it and acts that way; a boastful immoderate person

Definition categories: person

2. a person who knocks (as seeking to gain admittance)

- open the door and see who the knocker is

Definition categories: person, individual, mortal, somebody, someone, soul

3. one who disparages or belittles the worth of something

Similar word(s): depreciator, detractor, disparager

Definition categories: person, cynic, faultfinder

4. either of two soft fleshy milk-secreting glandular organs on the chest of a woman

Similar word(s): boob, bosom, breast

Definition categories: body, mamma

5. a device (usually metal and ornamental) attached by a hinge to a door

Similar word(s): doorknocker, rapper

Definition categories: man–made, device