Borzeguim is a buskin/ a high laced laced/buttoned boot...a type of boot that was used a long time ago..half way up on the leg and buttoned or laced...
the word comes from the dutch borseken
in old french is brosequin
in nowadays french is brodequin

unfort. don't know the exact word for german...but it might be something very similar to the dutch version borseken...

hope it helps!...