Noun
(used in the plural) trousers ending above the knee
Source: WordNetknee-breeches
Official dress Lord Mayor wearing the state robe over court dress On formal occasions the Lord Mayor wears traditional black velvet court dress (old style) consisting of a coat, waistcoat and knee breeches with steel cut buttons. Source: Internet
The Queen with President Nixon in the ground floor Marble Hall Formerly, men not wearing military uniform wore knee breeches of an 18th-century design. Source: Internet