Meaning of “put sth down” - Learner’s Dictionary

put sth down

phrasal verb with put uk us /pʊt/ verb [ T ] (present participle putting, past tense and past participle put)
STOP HOLDING

B1 to put something that you are holding onto the floor or onto another surface:

I'll just put my bag down for a minute, it's rather heavy.
TELEPHONE UK

B1 If you put the phone down, you put the part of the telephone that you speak into back to its usual position.

ANIMAL

to kill an animal, usually because it is suffering

(Definition of “put sth down” from the Cambridge Learner’s Dictionary © Cambridge University Press)