What is the meaning of do in English?

"Do" is a very versatile word in English, acting as both a verb and an auxiliary verb. Its meaning depends on the context. Here's a breakdown:

As a verb:

* Perform an action: This is the most basic meaning. "I do my homework." "She did the dishes."

* Function or operate: "This car does 0 to 60 in 5 seconds." "The machine doesn't do what it's supposed to."

* Serve a purpose: "This chair does nicely for a footrest." "What does this button do?"

* Be sufficient: "This will do for now." "That'll do, pig."

* Be engaged in an activity: "What do you do for a living?" "I do a lot of reading."

As an auxiliary verb:

* Form questions: "Do you like pizza?" "Did you go to the party?"

* Form negatives: "I don't like broccoli." "She didn't eat breakfast."

* Emphasize an action: "I do love you." "He did get here on time."

* Replace another verb for emphasis: "I do the dishes every day." (meaning "I always do the dishes")

* Form emphatic statements: "Do tell me more!" "Do be careful."

Other uses:

* Part of idioms and phrases: "Do your best." "Do away with something." "Do without something."

* Part of common expressions: "Do you mind?" "Do me a favor."

It's important to note that "do" often has implied meanings in different contexts. It's best to analyze the sentence structure and consider the surrounding words to understand its exact meaning.