Breeches and Rear of tube

Breeches noun - Trousers ending above the knee.

Rear of tube is a synonym for breeches. In some cases you can use "Rear of tube" instead a noun "Breeches".

Rear of tube noun - Opening in the rear of the barrel of a gun where bullets can be loaded.

Breeches is a synonym for rear of tube. Sometimes you can replace term "Breeches" with "Rear of tube", this terms are similar.