Knickers vs. Underpants: What's the Difference?

Knickers and Underpants Definitions
Knickers
Knickerbockers.
Underpants
Underwear covering the genitalia and often buttocks, usually going no higher than the navel.
Knickers
Women's underpants.
Underpants
An undergarment that covers the body from the waist no further than to the thighs; usually worn next to the skin
Knickers
A mild exclamation of annoyance.
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Knickers
The name for a style of loose-fitting short trousers, gathered in and ending at the knees; smallclothes; called also knickerbockers.
Knickers
Underpants, especially of women; panties.
Knickers
Trousers ending above the knee
Knickers
(usually in the plural) underpants worn by women;
She was afraid that her bloomers might have been showing