Definition & Meaning of "schmuck"in English

What is the origin of the term "schmuck" and how is it used?

"Schmuck" comes from Yiddish, where it literally refers to the penis, and entered American English through Jewish immigrant communities in the early 20th century. The sexual meaning faded in mainstream use, and it became a general insult for a foolish, clumsy, or contemptibly stupid person. It is common in informal speech and humor, especially in North America. The term is derogatory but often carries a comedic or exaggerated tone.