Put down cards (4)
I believe the answer is:
deck
This could be a double definition.
'put down' is the first definition.
'deck' can be an answer for 'down' (thesaurus). I'm unsure of the 'put' bit.
'cards' is the second definition.
(deck of cards)
Can you help me to learn more?
(Other definitions for deck that I've seen before include "Pack - part of record player" , "Adorn; pack of cards" , "Adorn; card pack" , "red and black suits" , "part of ship" .)