This meaning is used to inquire about the identity of something or to seek information.

This meaning refers to something that is known but not explicitly named. It's often used in casual conversation to refer to something understood by the speaker and listener.

This meaning is used when someone cannot remember or does not want to specify the name of a person or object.

This is a slang usage referring to male genitalia. It can be used vulgar or informal contexts.

This usage conveys a strong negation and can express complete disagreement or denial.

This meaning is used to express surprise, confusion, or to request clarification.

This usage is often an informal way to capture attention or to express a demand for action or acknowledgment.

This meaning conveys reassurance or dismissal, often used to downplay a situation or concern.