quack

/kwæk/

verb

To practice or commit quackery (fraudulent medicine). / (obsolete) To make vain and loud pretensions.

The duck quacks loudly in the pond.

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詳細

意味（1）

To practice or commit quackery (fraudulent medicine).

[…] it is incredible, and scarce to be imagin’d, how the Posts of Houses, and Corners of Streets were plaster’d over with Doctors Bills, and Papers of ignorant Fellows; quacking and tampering in Physick, and inviting the People to come to them for Remedies;

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