The word breeches is the plural form for the noun breech, a word for the lower part or bottom of something; the opening in the rear of the barrel of a gun where bullets are loaded; a vacant or unobstructed space that is man-made; short for a breech delivery, a birth in which the baby's head does not come out first.

The word breeches is also an informal word for trousers, a singular or plural form for a pair of breeches, a pair of trousers. The plural forms are pairs of breeches, pairs of trousers.