What it means

1. verb put (an animal) to death
   “The customs agents destroyed the dog that was found to be rabid”
2. verb cause to sit or seat or be in a settled position or place
   “set down your bags here”
3. verb put in a horizontal position
   “lay the books on the table”
4. verb cause to come to the ground
   “the pilot managed to land the airplane safely”
5. verb make a record of
6. verb put down in writing
7. verb remove (cargo, people, etc.) from and leave
   “unload the cargo”
8. verb reduce in worth or character, usually verbally
   “She tends to put down younger women colleagues”