1. to put something onto a surface 2. to humiliate 3. to write something down 4. to kill an animal by injection because it is old or sick.
put down
Examples
1. I feel dizzy, can you put me down on the ground. 2. It's unpleasant, when teachers put you down in the front of the whole class. 3. Can you repeat your telephone number, I want to put it down. 4. I'd never put my pet down, I'd be with him till his last breath.