Question

What does the word quack likely mean

Answer 1

if a verb it is sound a duck makes

if a noun It is some one pretending to be a fake doctor

Answer 2

The sound made by a duck.

Step-by-step explanation:

There are two definitions that are the generally used for the word Quack:

"the characteristic harsh sound made by a duck"

"(of a duck) make a characteristic harsh sound"

Also, the Cambridge Dictionary defines "quack" as both, "The sound that a duck makes" and "a person who dishonestly pretends to have medical skills or knowledge", but the latter is less commonly used.