kid

1 kid /ˈkɪd/ noun
plural kids
1 kid
/ˈkɪd/
noun
plural kids
Britannica Dictionary definition of KID
1 
[count] informal
a  : a son or daughter : child
b  : a young person
— sometimes used as a form of address
2 
a  [count] : a young goat
b  [noncount] : a soft leather made from the skin of a young goat

new kid on the block

: someone who has recently joined a particular group
2 kid /ˈkɪd/ adjective
2 kid
/ˈkɪd/
adjective
Britannica Dictionary definition of KID
always used before a noun chiefly US, informal
: younger
3 kid /ˈkɪd/ verb
kids; kidded; kidding
3 kid
/ˈkɪd/
verb
kids; kidded; kidding
Britannica Dictionary definition of KID
informal
1 
: to speak to (someone) in a way that is not serious : to say things that are not true to (someone) in a joking way
[+ object]
[no object]
— often + around
2 
[+ object] : to make fun of (someone) in a friendly way : tease
3 
[+ object] : to say (something) in a joking way

kid yourself

: to fail to admit the truth to yourself : to deceive yourself

no kidding

informal
1 
— used to emphasize the truth of a statement
2 
— used to ask if a statement is really true
3 
— used to show that you are surprised by or interested in what has been said.
— often used in an ironic way in response to a statement that is regarded as very obvious

— kidder

noun, plural kidders [count]