to tie something or someone tightly or to fasten something:
They bound the packages with brightly coloured ribbon.
Bind together the two broken ends.
The prisoner was bound hand and foot.
to tie something around a part of the body, especially a part that is damaged:
He had already bound the child's arm when I arrived.
to sew or stick material along the edges of something such as a jacket, in order to make it stronger or to decorate it:
The edges of the carpet are bound to stop them fraying.
to make separate pieces of paper into a book:
There are several different ways to bind a book, for example you can stitch or stick the pages together.