card

1 card /ˈkɑɚd/ noun
plural cards
1 card
/ˈkɑɚd/
noun
plural cards
Britannica Dictionary definition of CARD
1 
a  [count] : a small piece of stiff paper that is marked with symbols or pictures to show its value, comes in a set, and is used for playing games (such as poker)
— called also playing card
— see also cardsharp, card table, face card, house of cards, picture card
b  cards [plural] : a game played with a deck of cards : a card game
c  [count] — used figuratively to refer to something that gives you an advantage when you are trying to make a deal or reach an agreement
d  [singular] — used figuratively to refer to an emotional issue (such as race) that is mentioned in a particular situation in order to give you an advantage
2 
[count]
a  : a thick piece of paper that is usually folded in half and decorated on one side and that contains a greeting, an invitation, etc.
— see also christmas card, greeting card
3 
[count] : a rectangular piece of plastic that is used to buy goods or services or to get money from a bank or a machine
4 
[count]
a  : a rectangular piece of paper or plastic with information about a person written on it
b  : a small piece of paper that is used for writing down information
5 
[count] : trading card
6 
[count] : a thin, hard board that has small electronic devices on it and that can be added to the inside of a computer to make the computer perform different tasks
7 
[count] : a list of the individual competitions that will happen at a sports event : a sports program
8 
[count] old-fashioned : a funny or amusing person

get your card

British or be given your card
: to be told that you no longer have a job

hold (all/all of) the cards

: to be in control of a situation and have the power to make decisions

in the cards

(US) or British on the cards
: certain or likely to happen in the future
— often used in negative statements

lay/put (all/all of) your cards on the table

: to be honest with other people and to tell them your thoughts, plans, etc., in a very open way

overplay your cards

— see overplay

play/hold/keep your cards close to the/your chest/vest

: to keep your plans, ideas, etc., hidden from other people

play your cards right

: to do things in an intelligent and well-planned way
2 card /ˈkɑɚd/ verb
cards; carded; carding
2 card
/ˈkɑɚd/
verb
cards; carded; carding
Britannica Dictionary definition of CARD
[+ object]
1 
US, informal : to ask (someone) to show a form of identification (such as a driver's license) in order to prove that the person is old enough to do something (such as to drink alcohol)
2 
: to achieve (a score) in golf