Definition & Meaning of "pantywaist"in English

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

"Pantywaist" appeared in American English in the early 20th century and originally referred to a style of children's clothing that included underwear-like garments resembling panties. The insult developed from the association of boys wearing such clothing with femininity, leading to the metaphor of weakness or lack of masculinity. It came to describe a boy or man seen as weak, effeminate, or cowardly. The term is used in insults or teasing, often with a dated tone today. It is derogatory and gender-stereotyping.